/*
* Copyright 2014-2023 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://aws.amazon.com/apache2.0
*
* This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES
* OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and
* limitations under the License.
*/
package com.amazonaws.services.dynamodbv2.datamodeling;
import com.amazonaws.services.dynamodbv2.datamodeling.ArgumentMarshaller.BinaryAttributeMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.ArgumentMarshaller.BinarySetAttributeMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.ArgumentMarshaller.BooleanAttributeMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.ArgumentMarshaller.ListAttributeMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.ArgumentMarshaller.MapAttributeMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.ArgumentMarshaller.NumberAttributeMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.ArgumentMarshaller.NumberSetAttributeMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.ArgumentMarshaller.StringAttributeMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.ArgumentMarshaller.StringSetAttributeMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapperFieldModel.DynamoDBAttributeType;
import com.amazonaws.services.dynamodbv2.datamodeling.StandardBeanProperties.Bean;
import com.amazonaws.services.dynamodbv2.datamodeling.StandardModelFactories.Rule;
import com.amazonaws.services.dynamodbv2.datamodeling.StandardModelFactories.RuleFactory;
import com.amazonaws.services.dynamodbv2.datamodeling.marshallers.BooleanSetToNumberSetMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.marshallers.BooleanToBooleanMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.marshallers.BooleanToNumberMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.marshallers.ByteArraySetToBinarySetMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.marshallers.ByteArrayToBinaryMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.marshallers.ByteBufferSetToBinarySetMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.marshallers.ByteBufferToBinaryMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.marshallers.CalendarSetToStringSetMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.marshallers.CalendarToStringMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.marshallers.CollectionToListMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.marshallers.CustomMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.marshallers.DateSetToStringSetMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.marshallers.DateToStringMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.marshallers.MapToMapMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.marshallers.NumberSetToNumberSetMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.marshallers.NumberToNumberMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.marshallers.ObjectSetToStringSetMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.marshallers.ObjectToMapMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.marshallers.ObjectToStringMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.marshallers.S3LinkToStringMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.marshallers.StringSetToStringSetMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.marshallers.StringToStringMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.marshallers.UUIDSetToStringSetMarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.BigDecimalSetUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.BigDecimalUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.BigIntegerSetUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.BigIntegerUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.BooleanSetUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.BooleanUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.ByteArraySetUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.ByteArrayUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.ByteBufferSetUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.ByteBufferUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.ByteSetUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.ByteUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.CalendarSetUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.CalendarUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.CustomUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.DateSetUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.DateUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.DoubleSetUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.DoubleUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.FloatSetUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.FloatUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.IntegerSetUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.IntegerUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.ListUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.LongSetUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.LongUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.MapUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.NullableUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.ObjectSetUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.ObjectUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.S3LinkUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.ShortSetUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.ShortUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.StringSetUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.StringUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.UUIDSetUnmarshaller;
import com.amazonaws.services.dynamodbv2.datamodeling.unmarshallers.UUIDUnmarshaller;
import com.amazonaws.services.dynamodbv2.model.AttributeValue;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import java.lang.reflect.Method;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.nio.ByteBuffer;
import java.text.ParseException;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.UUID;
/**
* Pre-defined strategies for mapping between Java types and DynamoDB types.
*/
public final class ConversionSchemas {
private static final Log LOGGER =
LogFactory.getLog(ConversionSchemas.class);
/**
* The V1 schema mapping, which retains strict backwards compatibility with
* the original DynamoDB data model. In particular, it marshals Java
* Booleans as DynamoDB Numbers rather than the newer Boolean type, and does
* not support marshaling Lists or Maps. It <em>can</em> unmarshal
* values written in newer formats to ease migration.
* <p>
* Use me if you have other code still using an old version of the SDK that
* does not understand the new List and Map types and want to ensure that
* you don't accidentally start writing values using these types.
*/
public static final ConversionSchema V1 = v1Builder("V1ConversionSchema").build();
/**
* A V2 conversion schema which retains backwards compatibility with the
* V1 conversion schema for existing DynamoDB types, but adds the ability
* to marshall recursive structures using the new List and Map types. This
* is currently the default conversion schema.
*/
public static final ConversionSchema V2_COMPATIBLE = v2CompatibleBuilder(
"V2CompatibleConversionSchema").build();
/**
* The native V2 conversion schema. This schema breaks compatibility with
* older versions of the mapper that only support the V1 schema by
* storing booleans as native DynamoDB Booleans rather than as a 1 or 0
* in a DynamoDB Number. Switching to the V2 schema will prevent older
* versions of the mapper from reading items you write that contain
* booleans.
*/
public static final ConversionSchema V2 = v2Builder("V2ConversionSchema").build();
static final ConversionSchema DEFAULT = V2_COMPATIBLE;
/**
* A ConversionSchema builder that defaults to building {@link #V1}.
*/
public static Builder v1Builder(String name) {
return new Builder(name, V1MarshallerSet.marshallers(), V1MarshallerSet.setMarshallers(),
StandardUnmarshallerSet.unmarshallers(),
StandardUnmarshallerSet.setUnmarshallers());
}
/**
* A ConversionSchema builder that defaults to building {@link #V2_COMPATIBLE}.
*/
public static Builder v2CompatibleBuilder(String name) {
return new Builder(name, V2CompatibleMarshallerSet.marshallers(),
V2CompatibleMarshallerSet.setMarshallers(),
StandardUnmarshallerSet.unmarshallers(),
StandardUnmarshallerSet.setUnmarshallers());
}
/**
* A ConversionSchema builder that defaults to building {@link #V2}.
*/
public static Builder v2Builder(String name) {
return new Builder(name, V2MarshallerSet.marshallers(), V2MarshallerSet.setMarshallers(),
StandardUnmarshallerSet.unmarshallers(),
StandardUnmarshallerSet.setUnmarshallers());
}
public static class Builder {
private final String name;
private final List<Pair<ArgumentMarshaller>> marshallers;
private final List<Pair<ArgumentMarshaller>> setMarshallers;
private final List<Pair<ArgumentUnmarshaller>> unmarshallers;
private final List<Pair<ArgumentUnmarshaller>> setUnmarshallers;
Builder(String name, List<Pair<ArgumentMarshaller>> marshallers,
List<Pair<ArgumentMarshaller>> setMarshallers,
List<Pair<ArgumentUnmarshaller>> unmarshallers,
List<Pair<ArgumentUnmarshaller>> setUnmarshallers) {
this.name = name;
this.marshallers = marshallers;
this.setMarshallers = setMarshallers;
this.unmarshallers = unmarshallers;
this.setUnmarshallers = setUnmarshallers;
}
/**
* Adds marshaling of a type to the schema. Types are in LIFO order, so the last type added
* will be the first matched.
*/
public Builder addFirstType(Class<?> clazz, ArgumentMarshaller marshaller,
ArgumentUnmarshaller unmarshaller) {
this.marshallers.add(0, Pair.of(clazz, marshaller));
this.unmarshallers.add(0, Pair.of(clazz, unmarshaller));
return this;
}
/**
* Adds marshaling of a Set of a type to the schema. Types are in LIFO order, so the last
* type added will be the first matched.
*/
public Builder addFirstSetType(Class<?> clazz, ArgumentMarshaller marshaller,
ArgumentUnmarshaller unmarshaller) {
this.setMarshallers.add(0, Pair.of(clazz, marshaller));
this.setUnmarshallers.add(0, Pair.of(clazz, unmarshaller));
return this;
}
public ConversionSchema build() {
return new StandardConversionSchema(name, new AbstractMarshallerSet(marshallers,
setMarshallers),
new StandardUnmarshallerSet(unmarshallers,
setUnmarshallers));
}
}
static class StandardConversionSchema implements ConversionSchema {
private final String name;
private final MarshallerSet marshallers;
private final UnmarshallerSet unmarshallers;
public StandardConversionSchema(
String name,
MarshallerSet marshallers,
UnmarshallerSet unmarshallers) {
this.name = name;
this.marshallers = new CachingMarshallerSet(
new AnnotationAwareMarshallerSet(marshallers));
this.unmarshallers = new CachingUnmarshallerSet(
new AnnotationAwareUnmarshallerSet(unmarshallers));
}
@Override
public ItemConverter getConverter(Dependencies dependencies) {
S3ClientCache s3cc = dependencies.get(S3ClientCache.class);
return new StandardItemConverter(
marshallers,
unmarshallers,
s3cc);
}
@Override
public String toString() {
return name;
}
}
static class StandardItemConverter implements ItemConverter {
private final MarshallerSet marshallerSet;
private final UnmarshallerSet unmarshallerSet;
private final S3ClientCache s3cc;
public StandardItemConverter(
MarshallerSet marshallerSet,
UnmarshallerSet unmarshallerSet,
S3ClientCache s3cc) {
this.marshallerSet = marshallerSet;
this.unmarshallerSet = unmarshallerSet;
this.s3cc = s3cc;
}
@Override
public DynamoDBMapperFieldModel getFieldModel(Method getter) {
final ArgumentMarshaller marshaller = getMarshaller(getter);
final DynamoDBAttributeType attributeType;
if (marshaller instanceof StringAttributeMarshaller) {
attributeType = DynamoDBAttributeType.S;
} else if (marshaller instanceof NumberAttributeMarshaller) {
attributeType = DynamoDBAttributeType.N;
} else if (marshaller instanceof BinaryAttributeMarshaller) {
attributeType = DynamoDBAttributeType.B;
} else if (marshaller instanceof StringSetAttributeMarshaller) {
attributeType = DynamoDBAttributeType.SS;
} else if (marshaller instanceof NumberSetAttributeMarshaller) {
attributeType = DynamoDBAttributeType.NS;
} else if (marshaller instanceof BinarySetAttributeMarshaller) {
attributeType = DynamoDBAttributeType.BS;
} else if (marshaller instanceof BooleanAttributeMarshaller) {
attributeType = DynamoDBAttributeType.BOOL;
} else if (marshaller instanceof ListAttributeMarshaller) {
attributeType = DynamoDBAttributeType.L;
} else if (marshaller instanceof MapAttributeMarshaller) {
attributeType = DynamoDBAttributeType.M;
} else {
throw new DynamoDBMappingException(
"Unrecognized marshaller type for " + getter + ": "
+ marshaller);
}
// Note, generating the attribute name using this method is not
// actually correct for @DynamoDBFlattened attributes, however,
// its the best that can be done given only the method. The
// proper way to get this information is using the model factory.
final StandardAnnotationMaps.FieldMap annotations = StandardAnnotationMaps.of(getter, null);
final DynamoDBMapperFieldModel.Builder builder = new DynamoDBMapperFieldModel.Builder(void.class, annotations);
builder.with(attributeType);
return builder.build();
}
@Override
public AttributeValue convert(Method getter, Object object) {
if (object == null) {
return null;
}
ArgumentMarshaller marshaller = getMarshaller(getter);
return marshaller.marshall(object);
}
@Override
public Map<String, AttributeValue> convert(Object object) {
if (object == null) {
return null;
}
Class<Object> clazz = (Class<Object>)object.getClass();
Map<String, AttributeValue> result =
new HashMap<String, AttributeValue>();
for (final Bean<Object,Object> bean : StandardBeanProperties.of(clazz).map().values()) {
Object getterResult = bean.reflect().get(object);
if (getterResult != null) {
AttributeValue value = convert(bean.type().getter(), getterResult);
if (value != null) {
result.put(bean.properties().attributeName(), value);
}
}
}
return result;
}
private ArgumentMarshaller getMarshaller(Method getter) {
ArgumentMarshaller marshaller =
marshallerSet.getMarshaller(getter);
marshaller = augment(getter.getGenericReturnType(), marshaller);
return marshaller;
}
private ArgumentMarshaller getMemberMarshaller(Type type) {
ArgumentMarshaller marshaller =
marshallerSet.getMemberMarshaller(type);
marshaller = augment(type, marshaller);
return marshaller;
}
private ArgumentMarshaller augment(
Type type,
ArgumentMarshaller marshaller) {
if (marshaller instanceof CollectionToListMarshaller) {
return getCollectionToListMarshaller(type);
}
if (marshaller instanceof MapToMapMarshaller) {
return getMapToMapMarshaller(type);
}
if (marshaller instanceof ObjectToMapMarshaller) {
return getObjectToMapMarshaller(type);
}
return marshaller;
}
private ArgumentMarshaller getCollectionToListMarshaller(Type type) {
if (!(type instanceof ParameterizedType)) {
throw new DynamoDBMappingException(
"Cannot tell what type of objects belong in the "
+ "Collection type " + type + ", which is not "
+ "parameterized.");
}
ParameterizedType ptype = (ParameterizedType) type;
Type[] args = ptype.getActualTypeArguments();
if (args == null || args.length != 1) {
throw new DynamoDBMappingException(
"Cannot tell what type of objects belong in the "
+ "Collection type " + type + "; unexpected number of "
+ "type arguments.");
}
ArgumentMarshaller memberMarshaller =
getMemberMarshaller(args[0]);
return new CollectionToListMarshaller(memberMarshaller);
}
private ArgumentMarshaller getMapToMapMarshaller(Type type) {
if (!(type instanceof ParameterizedType)) {
throw new DynamoDBMappingException(
"Cannot tell what type of objects belong in the Map "
+ "type " + type + ", which is not parameterized.");
}
ParameterizedType ptype = (ParameterizedType) type;
Type[] args = ptype.getActualTypeArguments();
if (args == null || args.length != 2) {
throw new DynamoDBMappingException(
"Cannot tell what type of objects belong in the Map "
+ "type " + type + "; unexpected number of type "
+ "arguments.");
}
if (args[0] != String.class) {
throw new DynamoDBMappingException(
"Only Map<String, ?> is supported.");
}
ArgumentMarshaller memberMarshaller =
getMemberMarshaller(args[1]);
return new MapToMapMarshaller(memberMarshaller);
}
private ArgumentMarshaller getObjectToMapMarshaller(Type type) {
Type localType = type;
if (localType instanceof ParameterizedType) {
localType = ((ParameterizedType) localType).getRawType();
}
if (!(localType instanceof Class)) {
throw new DynamoDBMappingException(
"Cannot convert " + type + " to a class");
}
Class<?> clazz = (Class<?>) localType;
if (StandardAnnotationMaps.of(clazz).attributeType() != DynamoDBAttributeType.M) {
throw new DynamoDBMappingException(
"Cannot marshall type " + type
+ " without a custom marshaler or @DynamoDBDocument "
+ "annotation.");
}
return new ObjectToMapMarshaller(this);
}
@Override
public Object unconvert(
Method getter,
Method setter,
AttributeValue value) {
ArgumentUnmarshaller unmarshaller = getUnmarshaller(getter, setter);
return unmarshall(unmarshaller, setter, value);
}
@Override
public <T> T unconvert(
Class<T> clazz,
Map<String, AttributeValue> value) {
T result = createObject(clazz);
if (value == null || value.isEmpty()) {
return result;
}
for (final Bean<T,Object> bean : StandardBeanProperties.of(clazz).map().values()) {
AttributeValue av = value.get(bean.properties().attributeName());
if (av != null) {
ArgumentUnmarshaller unmarshaller = getUnmarshaller(bean.type().getter(), bean.type().setter());
Object unmarshalled = unmarshall(unmarshaller, bean.type().setter(), av);
bean.reflect().set(result, unmarshalled);
}
}
return result;
}
private ArgumentUnmarshaller getUnmarshaller(
Method getter,
Method setter) {
ArgumentUnmarshaller unmarshaller =
unmarshallerSet.getUnmarshaller(getter, setter);
unmarshaller = augment(
setter.getGenericParameterTypes()[0], unmarshaller);
return new NullableUnmarshaller(unmarshaller);
}
private ArgumentUnmarshaller getMemberUnmarshaller(Type type) {
ArgumentUnmarshaller unmarshaller =
unmarshallerSet.getMemberUnmarshaller(type);
unmarshaller = augment(type, unmarshaller);
return new NullableUnmarshaller(unmarshaller);
}
private ArgumentUnmarshaller augment(
Type type,
ArgumentUnmarshaller unmarshaller) {
// Inject our s3 client cache if it's an S3LinkUnmarshaller.
if (unmarshaller instanceof S3LinkUnmarshaller) {
return new S3LinkUnmarshaller(s3cc);
}
// Inject an appropriate member-type unmarshaller if it's a list,
// object-set, or map unmarshaller.
if (unmarshaller instanceof ObjectSetUnmarshaller) {
return getObjectSetUnmarshaller(type);
}
if (unmarshaller instanceof ListUnmarshaller) {
return getListUnmarshaller(type);
}
if (unmarshaller instanceof MapUnmarshaller) {
return getMapUnmarshaller(type);
}
// Inject ourselves to recursively unmarshall things if it's an
// ObjectUnmarshaller.
if (unmarshaller instanceof ObjectUnmarshaller) {
return getObjectUnmarshaller(type);
}
return unmarshaller;
}
private ArgumentUnmarshaller getObjectSetUnmarshaller(Type type) {
if (!(type instanceof ParameterizedType)) {
throw new DynamoDBMappingException(
"Cannot tell what type of objects belong in the Set "
+ "type " + type + ", which is not parameterized.");
}
ParameterizedType ptype = (ParameterizedType) type;
Type[] args = ptype.getActualTypeArguments();
if (args == null || args.length != 1) {
throw new DynamoDBMappingException(
"Cannot tell what type of objects belong in the Set "
+ "type " + type + "; unexpected number of type "
+ "arguments.");
}
ArgumentUnmarshaller memberUnmarshaller =
getMemberUnmarshaller(args[0]);
return new ObjectSetUnmarshaller(memberUnmarshaller);
}
private ArgumentUnmarshaller getListUnmarshaller(Type type) {
if (!(type instanceof ParameterizedType)) {
throw new DynamoDBMappingException(
"Cannot tell what type of objects belong in the List "
+ "type " + type + ", which is not parameterized.");
}
ParameterizedType ptype = (ParameterizedType) type;
Type[] args = ptype.getActualTypeArguments();
if (args == null || args.length != 1) {
throw new DynamoDBMappingException(
"Cannot tell what type of objects belong in the List "
+ "type " + type + "; unexpected number of type "
+ "arguments.");
}
ArgumentUnmarshaller memberUnmarshaller =
getMemberUnmarshaller(args[0]);
return new ListUnmarshaller(memberUnmarshaller);
}
private ArgumentUnmarshaller getMapUnmarshaller(Type type) {
if (!(type instanceof ParameterizedType)) {
throw new DynamoDBMappingException(
"Cannot tell what type of objects belong in the Map "
+ "type " + type + ", which is not parameterized.");
}
ParameterizedType ptype = (ParameterizedType) type;
Type[] args = ptype.getActualTypeArguments();
if (args == null || args.length != 2) {
throw new DynamoDBMappingException(
"Cannot tell what type of objects belong in the Map "
+ "type " + type + "; unexpected number of type "
+ "arguments.");
}
if (args[0] != String.class) {
throw new DynamoDBMappingException(
"Only Map<String, ?> is supported.");
}
ArgumentUnmarshaller memberUnmarshaller =
getMemberUnmarshaller(args[1]);
return new MapUnmarshaller(memberUnmarshaller);
}
private ArgumentUnmarshaller getObjectUnmarshaller(Type type) {
Type localType = type;
if (localType instanceof ParameterizedType) {
localType = ((ParameterizedType) type).getRawType();
}
if (!(localType instanceof Class)) {
throw new DynamoDBMappingException(
"Cannot convert " + type + " to a class");
}
Class<?> clazz = (Class<?>) localType;
if (StandardAnnotationMaps.of(clazz).attributeType() != DynamoDBAttributeType.M) {
throw new DynamoDBMappingException(
"Cannot unmarshall to type " + type
+ " without a custom marshaler or @DynamoDBDocument "
+ "annotation.");
}
return new ObjectUnmarshaller(this, clazz);
}
private static Object unmarshall(
ArgumentUnmarshaller unmarshaller,
Method setter,
AttributeValue value) {
unmarshaller.typeCheck(value, setter);
try {
return unmarshaller.unmarshall(value);
} catch (IllegalArgumentException e) {
throw new DynamoDBMappingException(
"Couldn't unmarshall value " + value + " for " + setter,
e);
} catch (ParseException e) {
throw new DynamoDBMappingException(
"Error attempting to parse date string " + value + " for "
+ setter,
e);
}
}
private static <T> T createObject(Class<T> clazz) {
try {
return clazz.newInstance();
} catch (InstantiationException e) {
throw new DynamoDBMappingException(
"Failed to instantiate new instance of class", e);
} catch (IllegalAccessException e) {
throw new DynamoDBMappingException(
"Failed to instantiate new instance of class", e);
}
}
}
static interface MarshallerSet {
ArgumentMarshaller getMarshaller(Method getter);
ArgumentMarshaller getMemberMarshaller(Type memberType);
}
static interface UnmarshallerSet {
ArgumentUnmarshaller getUnmarshaller(Method getter, Method setter);
ArgumentUnmarshaller getMemberUnmarshaller(Type memberType);
}
static final class V2MarshallerSet {
private static List<Pair<ArgumentMarshaller>> marshallers() {
List<Pair<ArgumentMarshaller>> list =
new ArrayList<Pair<ArgumentMarshaller>>();
// Use the new V2 boolean marshallers.
addStandardDateMarshallers(list);
addV2BooleanMarshallers(list);
addStandardNumberMarshallers(list);
addStandardStringMarshallers(list);
addStandardBinaryMarshallers(list);
addStandardS3LinkMarshallers(list);
// Add marshallers for the new list and map types.
list.add(Pair.of(List.class, CollectionToListMarshaller.instance()));
list.add(Pair.of(Map.class, MapToMapMarshaller.instance()));
// Make sure I'm last since I'll catch anything.
list.add(Pair.of(Object.class, ObjectToMapMarshaller.instance()));
return list;
}
private static List<Pair<ArgumentMarshaller>> setMarshallers() {
List<Pair<ArgumentMarshaller>> list =
new ArrayList<Pair<ArgumentMarshaller>>();
// No more Set<Boolean> -> NS or Set<Object> -> SS marshallers
addStandardDateSetMarshallers(list);
addStandardNumberSetMarshallers(list);
addStandardStringSetMarshallers(list);
addStandardBinarySetMarshallers(list);
// Make sure I'm last since I'll catch anything.
list.add(Pair.of(
Object.class,
CollectionToListMarshaller.instance()));
return list;
}
}
static final class V2CompatibleMarshallerSet {
private static List<Pair<ArgumentMarshaller>> marshallers() {
List<Pair<ArgumentMarshaller>> list =
new ArrayList<Pair<ArgumentMarshaller>>();
// Keep the old v1 boolean marshallers for compatibility.
addStandardDateMarshallers(list);
addV1BooleanMarshallers(list);
addStandardNumberMarshallers(list);
addStandardStringMarshallers(list);
addStandardBinaryMarshallers(list);
addStandardS3LinkMarshallers(list);
// Add marshallers for the new list and map types.
list.add(Pair.of(List.class, CollectionToListMarshaller.instance()));
list.add(Pair.of(Map.class, MapToMapMarshaller.instance()));
// Make sure I'm last since I'll catch anything.
list.add(Pair.of(Object.class, ObjectToMapMarshaller.instance()));
return list;
}
private static List<Pair<ArgumentMarshaller>> setMarshallers() {
List<Pair<ArgumentMarshaller>> list =
new ArrayList<Pair<ArgumentMarshaller>>();
addStandardDateSetMarshallers(list);
addV1BooleanSetMarshallers(list);
addStandardNumberSetMarshallers(list);
addStandardStringSetMarshallers(list);
addStandardBinarySetMarshallers(list);
// If all else fails, fall back to this default marshaler to
// retain backwards-compatible behavior.
list.add(Pair.of(Object.class, ObjectSetToStringSetMarshaller.instance()));
return list;
}
}
static final class V1MarshallerSet {
private static List<Pair<ArgumentMarshaller>> marshallers() {
List<Pair<ArgumentMarshaller>> list =
new ArrayList<Pair<ArgumentMarshaller>>();
addStandardDateMarshallers(list);
addV1BooleanMarshallers(list);
addStandardNumberMarshallers(list);
addStandardStringMarshallers(list);
addStandardBinaryMarshallers(list);
addStandardS3LinkMarshallers(list);
return list;
}
private static List<Pair<ArgumentMarshaller>> setMarshallers() {
List<Pair<ArgumentMarshaller>> list =
new ArrayList<Pair<ArgumentMarshaller>>();
addStandardDateSetMarshallers(list);
addV1BooleanSetMarshallers(list);
addStandardNumberSetMarshallers(list);
addStandardStringSetMarshallers(list);
addStandardBinarySetMarshallers(list);
// If all else fails, fall back to this default marshaler to
// retain backwards-compatible behavior.
list.add(Pair.of(Object.class,
ObjectSetToStringSetMarshaller.instance()));
return list;
}
}
private static void addStandardDateMarshallers(
List<Pair<ArgumentMarshaller>> list) {
list.add(Pair.of(Date.class,
DateToStringMarshaller.instance()));
list.add(Pair.of(Calendar.class,
CalendarToStringMarshaller.instance()));
}
private static void addV1BooleanMarshallers(
List<Pair<ArgumentMarshaller>> list) {
list.add(Pair.of(Boolean.class,
BooleanToNumberMarshaller.instance()));
list.add(Pair.of(boolean.class,
BooleanToNumberMarshaller.instance()));
}
private static void addV2BooleanMarshallers(
List<Pair<ArgumentMarshaller>> list) {
list.add(Pair.of(Boolean.class,
BooleanToBooleanMarshaller.instance()));
list.add(Pair.of(boolean.class,
BooleanToBooleanMarshaller.instance()));
}
private static void addStandardNumberMarshallers(
List<Pair<ArgumentMarshaller>> list) {
list.add(Pair.of(Number.class,
NumberToNumberMarshaller.instance()));
list.add(Pair.of(byte.class,
NumberToNumberMarshaller.instance()));
list.add(Pair.of(short.class,
NumberToNumberMarshaller.instance()));
list.add(Pair.of(int.class,
NumberToNumberMarshaller.instance()));
list.add(Pair.of(long.class,
NumberToNumberMarshaller.instance()));
list.add(Pair.of(float.class,
NumberToNumberMarshaller.instance()));
list.add(Pair.of(double.class,
NumberToNumberMarshaller.instance()));
}
private static void addStandardStringMarshallers(
List<Pair<ArgumentMarshaller>> list) {
list.add(Pair.of(String.class,
StringToStringMarshaller.instance()));
list.add(Pair.of(UUID.class,
ObjectToStringMarshaller.instance()));
}
private static void addStandardBinaryMarshallers(
List<Pair<ArgumentMarshaller>> list) {
list.add(Pair.of(ByteBuffer.class,
ByteBufferToBinaryMarshaller.instance()));
list.add(Pair.of(byte[].class,
ByteArrayToBinaryMarshaller.instance()));
}
private static void addStandardS3LinkMarshallers(
List<Pair<ArgumentMarshaller>> list) {
list.add(Pair.of(S3Link.class,
S3LinkToStringMarshaller.instance()));
}
private static void addStandardDateSetMarshallers(
List<Pair<ArgumentMarshaller>> list) {
list.add(Pair.of(Date.class,
DateSetToStringSetMarshaller.instance()));
list.add(Pair.of(Calendar.class,
CalendarSetToStringSetMarshaller.instance()));
}
private static void addStandardNumberSetMarshallers(
List<Pair<ArgumentMarshaller>> list) {
list.add(Pair.of(Number.class,
NumberSetToNumberSetMarshaller.instance()));
list.add(Pair.of(byte.class,
NumberSetToNumberSetMarshaller.instance()));
list.add(Pair.of(short.class,
NumberSetToNumberSetMarshaller.instance()));
list.add(Pair.of(int.class,
NumberSetToNumberSetMarshaller.instance()));
list.add(Pair.of(long.class,
NumberSetToNumberSetMarshaller.instance()));
list.add(Pair.of(float.class,
NumberSetToNumberSetMarshaller.instance()));
list.add(Pair.of(double.class,
NumberSetToNumberSetMarshaller.instance()));
}
private static void addStandardStringSetMarshallers(
List<Pair<ArgumentMarshaller>> list) {
list.add(Pair.of(String.class,
StringSetToStringSetMarshaller.instance()));
list.add(Pair.of(UUID.class,
UUIDSetToStringSetMarshaller.instance()));
}
private static void addStandardBinarySetMarshallers(
List<Pair<ArgumentMarshaller>> list) {
list.add(Pair.of(ByteBuffer.class,
ByteBufferSetToBinarySetMarshaller.instance()));
list.add(Pair.of(byte[].class,
ByteArraySetToBinarySetMarshaller.instance()));
}
private static void addV1BooleanSetMarshallers(
List<Pair<ArgumentMarshaller>> list) {
list.add(Pair.of(Boolean.class,
BooleanSetToNumberSetMarshaller.instance()));
list.add(Pair.of(boolean.class,
BooleanSetToNumberSetMarshaller.instance()));
}
private static class AbstractMarshallerSet implements MarshallerSet {
private final List<Pair<ArgumentMarshaller>> marshallers;
private final List<Pair<ArgumentMarshaller>> setMarshallers;
public AbstractMarshallerSet(
List<Pair<ArgumentMarshaller>> marshallers,
List<Pair<ArgumentMarshaller>> setMarshallers) {
this.marshallers = marshallers;
this.setMarshallers = setMarshallers;
}
@Override
public ArgumentMarshaller getMarshaller(Method getter) {
Class<?> returnType = getter.getReturnType();
if (Set.class.isAssignableFrom(returnType)) {
Class<?> memberType =
unwrapGenericSetParam(getter.getGenericReturnType());
return getSet(getter, memberType);
} else {
return getScalar(getter, returnType);
}
}
@Override
public ArgumentMarshaller getMemberMarshaller(Type memberType) {
Class<?> clazz = resolveClass(memberType);
if (Set.class.isAssignableFrom(clazz)) {
Class<?> setMemberType = unwrapGenericSetParam(memberType);
return getSet(null, setMemberType);
} else {
return getScalar(null, clazz);
}
}
private ArgumentMarshaller getScalar(Method getter, Class<?> type) {
ArgumentMarshaller marshaller = find(type, marshallers);
if (marshaller == null) {
String className = "?";
String methodName = "?";
if (getter != null) {
className = getter.getDeclaringClass().toString();
methodName = getter.getName();
}
throw new DynamoDBMappingException(
"Cannot marshall return type " + type
+ " of method " + className + "." + methodName
+ " without a custom marshaler.");
}
return marshaller;
}
private ArgumentMarshaller getSet(Method getter, Class<?> memberType) {
ArgumentMarshaller marshaller = find(memberType, setMarshallers);
if (marshaller == null) {
String className = "?";
String methodName = "?";
if (getter != null) {
className = getter.getDeclaringClass().toString();
methodName = getter.getName();
}
throw new DynamoDBMappingException(
"Cannot marshall return type Set<" + memberType
+ "> of method " + className + "." + methodName
+ " without a custom marshaller.");
}
return marshaller;
}
}
static class StandardUnmarshallerSet implements UnmarshallerSet {
private final List<Pair<ArgumentUnmarshaller>> unmarshallers;
private final List<Pair<ArgumentUnmarshaller>> setUnmarshallers;
public StandardUnmarshallerSet() {
this(unmarshallers(), setUnmarshallers());
}
public StandardUnmarshallerSet(
List<Pair<ArgumentUnmarshaller>> unmarshallers,
List<Pair<ArgumentUnmarshaller>> setUnmarshallers) {
this.unmarshallers = unmarshallers;
this.setUnmarshallers = setUnmarshallers;
}
private static List<Pair<ArgumentUnmarshaller>> unmarshallers() {
List<Pair<ArgumentUnmarshaller>> list =
new ArrayList<Pair<ArgumentUnmarshaller>>();
list.add(Pair.of(double.class, DoubleUnmarshaller.instance()));
list.add(Pair.of(Double.class, DoubleUnmarshaller.instance()));
list.add(Pair.of(BigDecimal.class,
BigDecimalUnmarshaller.instance()));
list.add(Pair.of(BigInteger.class,
BigIntegerUnmarshaller.instance()));
list.add(Pair.of(int.class, IntegerUnmarshaller.instance()));
list.add(Pair.of(Integer.class, IntegerUnmarshaller.instance()));
list.add(Pair.of(float.class, FloatUnmarshaller.instance()));
list.add(Pair.of(Float.class, FloatUnmarshaller.instance()));
list.add(Pair.of(byte.class, ByteUnmarshaller.instance()));
list.add(Pair.of(Byte.class, ByteUnmarshaller.instance()));
list.add(Pair.of(long.class, LongUnmarshaller.instance()));
list.add(Pair.of(Long.class, LongUnmarshaller.instance()));
list.add(Pair.of(short.class, ShortUnmarshaller.instance()));
list.add(Pair.of(Short.class, ShortUnmarshaller.instance()));
list.add(Pair.of(boolean.class, BooleanUnmarshaller.instance()));
list.add(Pair.of(Boolean.class, BooleanUnmarshaller.instance()));
list.add(Pair.of(Date.class, DateUnmarshaller.instance()));
list.add(Pair.of(Calendar.class, CalendarUnmarshaller.instance()));
list.add(Pair.of(ByteBuffer.class,
ByteBufferUnmarshaller.instance()));
list.add(Pair.of(byte[].class,
ByteArrayUnmarshaller.instance()));
list.add(Pair.of(S3Link.class, S3LinkUnmarshaller.instance()));
list.add(Pair.of(UUID.class, UUIDUnmarshaller.instance()));
list.add(Pair.of(String.class, StringUnmarshaller.instance()));
list.add(Pair.of(List.class, ListUnmarshaller.instance()));
list.add(Pair.of(Map.class, MapUnmarshaller.instance()));
// Make sure I'm last since I'll catch all other types.
list.add(Pair.of(Object.class, ObjectUnmarshaller.instance()));
return list;
}
private static List<Pair<ArgumentUnmarshaller>> setUnmarshallers() {
List<Pair<ArgumentUnmarshaller>> list =
new ArrayList<Pair<ArgumentUnmarshaller>>();
list.add(Pair.of(double.class, DoubleSetUnmarshaller.instance()));
list.add(Pair.of(Double.class, DoubleSetUnmarshaller.instance()));
list.add(Pair.of(BigDecimal.class,
BigDecimalSetUnmarshaller.instance()));
list.add(Pair.of(BigInteger.class,
BigIntegerSetUnmarshaller.instance()));
list.add(Pair.of(int.class, IntegerSetUnmarshaller.instance()));
list.add(Pair.of(Integer.class, IntegerSetUnmarshaller.instance()));
list.add(Pair.of(float.class, FloatSetUnmarshaller.instance()));
list.add(Pair.of(Float.class, FloatSetUnmarshaller.instance()));
list.add(Pair.of(byte.class, ByteSetUnmarshaller.instance()));
list.add(Pair.of(Byte.class, ByteSetUnmarshaller.instance()));
list.add(Pair.of(long.class, LongSetUnmarshaller.instance()));
list.add(Pair.of(Long.class, LongSetUnmarshaller.instance()));
list.add(Pair.of(short.class, ShortSetUnmarshaller.instance()));
list.add(Pair.of(Short.class, ShortSetUnmarshaller.instance()));
list.add(Pair.of(boolean.class, BooleanSetUnmarshaller.instance()));
list.add(Pair.of(Boolean.class, BooleanSetUnmarshaller.instance()));
list.add(Pair.of(Date.class, DateSetUnmarshaller.instance()));
list.add(Pair.of(Calendar.class,
CalendarSetUnmarshaller.instance()));
list.add(Pair.of(ByteBuffer.class,
ByteBufferSetUnmarshaller.instance()));
list.add(Pair.of(byte[].class,
ByteArraySetUnmarshaller.instance()));
list.add(Pair.of(UUID.class, UUIDSetUnmarshaller.instance()));
list.add(Pair.of(String.class, StringSetUnmarshaller.instance()));
// Make sure I'm last since I'll catch all other types.
list.add(Pair.of(Object.class, ObjectSetUnmarshaller.instance()));
return list;
}
@Override
public ArgumentUnmarshaller getUnmarshaller(
Method getter,
Method setter) {
if (setter.getParameterTypes().length != 1) {
throw new DynamoDBMappingException(
"Expected exactly one agument to " + setter);
}
Class<?> paramType = setter.getParameterTypes()[0];
if (Set.class.isAssignableFrom(paramType)) {
paramType = unwrapGenericSetParam(
setter.getGenericParameterTypes()[0]);
return getSet(setter, paramType);
} else {
return getScalar(setter, paramType);
}
}
@Override
public ArgumentUnmarshaller getMemberUnmarshaller(Type memberType) {
Class<?> clazz = resolveClass(memberType);
if (Set.class.isAssignableFrom(clazz)) {
Class<?> setMemberType = unwrapGenericSetParam(memberType);
return getSet(null, setMemberType);
} else {
return getScalar(null, clazz);
}
}
private ArgumentUnmarshaller getSet(Method setter, Class<?> paramType) {
ArgumentUnmarshaller unmarshaller =
find(paramType, setUnmarshallers);
String className = "?";
String methodName = "?";
if (setter != null) {
className = setter.getDeclaringClass().toString();
methodName = setter.getName();
}
if (unmarshaller == null) {
throw new DynamoDBMappingException(
"Cannot unmarshall to parameter type Set<"
+ paramType + "> of method "
+ className + "." + methodName + " without a custom "
+ "unmarshaler.");
}
return unmarshaller;
}
private ArgumentUnmarshaller getScalar(Method setter, Class<?> type) {
ArgumentUnmarshaller unmarshaller = find(type, unmarshallers);
String className = "?";
String methodName = "?";
if (setter != null) {
className = setter.getDeclaringClass().toString();
methodName = setter.getName();
}
if (unmarshaller == null) {
throw new DynamoDBMappingException(
"Cannot unmarshall to parameter type " + type
+ "of method " + className + "." + methodName
+ " without a custom unmarshaler.");
}
return unmarshaller;
}
}
private static Class<?> unwrapGenericSetParam(Type setType) {
if (!(setType instanceof ParameterizedType)) {
LOGGER.warn("Set type " + setType + " is not a "
+ "ParameterizedType, using default marshaler and "
+ "unmarshaler!");
return Object.class;
}
ParameterizedType ptype = (ParameterizedType) setType;
Type[] arguments = ptype.getActualTypeArguments();
if (arguments.length != 1) {
LOGGER.warn("Set type " + setType + " does not have exactly one "
+ "type argument, using default marshaler and "
+ "unmarshaler!");
return Object.class;
}
if (arguments[0].toString().equals("byte[]")) {
return byte[].class;
} else {
return (Class<?>) arguments[0];
}
}
private static Class<?> resolveClass(Type type) {
Type localType = type;
if (localType instanceof ParameterizedType) {
localType = ((ParameterizedType) type).getRawType();
}
if (!(localType instanceof Class)) {
throw new DynamoDBMappingException("Cannot resolve class for type "
+ type);
}
return (Class<?>) localType;
}
private static <T> T find(Class<?> needle, List<Pair<T>> haystack) {
for (Pair<? extends T> pair : haystack) {
if (pair.key.isAssignableFrom(needle)) {
return pair.value;
}
}
return null;
}
private static class Pair<T> {
public static Pair<ArgumentMarshaller> of (
Class<?> key,
ArgumentMarshaller value) {
return new Pair<ArgumentMarshaller>(key, value);
}
public static Pair<ArgumentUnmarshaller> of (
Class<?> key,
ArgumentUnmarshaller value) {
return new Pair<ArgumentUnmarshaller>(key, value);
}
public final Class<?> key;
public final T value;
private Pair(Class<?> key, T value) {
this.key = key;
this.value = value;
}
}
static class AnnotationAwareMarshallerSet
implements MarshallerSet {
private final MarshallerSet wrapped;
public AnnotationAwareMarshallerSet(MarshallerSet wrapped) {
this.wrapped = wrapped;
}
@Override
public ArgumentMarshaller getMarshaller(Method getter) {
final StandardAnnotationMaps.FieldMap<?> annotations = StandardAnnotationMaps.of(getter, null);
final DynamoDBMarshalling marshalling = annotations.actualOf(DynamoDBMarshalling.class);
if (marshalling != null) {
return new CustomMarshaller(marshalling.marshallerClass());
} else if (annotations.actualOf(DynamoDBNativeBoolean.class) != null) {
return BooleanToBooleanMarshaller.instance();
}
return wrapped.getMarshaller(getter);
}
@Override
public ArgumentMarshaller getMemberMarshaller(Type memberType) {
return wrapped.getMemberMarshaller(memberType);
}
}
static class AnnotationAwareUnmarshallerSet
implements UnmarshallerSet {
private final UnmarshallerSet wrapped;
public AnnotationAwareUnmarshallerSet(UnmarshallerSet wrapped) {
this.wrapped = wrapped;
}
@Override
public ArgumentUnmarshaller getUnmarshaller(
Method getter,
Method setter) {
final StandardAnnotationMaps.FieldMap<?> annotations = StandardAnnotationMaps.of(getter, null);
final DynamoDBMarshalling marshalling = annotations.actualOf(DynamoDBMarshalling.class);
if (marshalling != null) {
return new CustomUnmarshaller(getter.getReturnType(), marshalling.marshallerClass());
}
return wrapped.getUnmarshaller(getter, setter);
}
@Override
public ArgumentUnmarshaller getMemberUnmarshaller(Type c) {
return wrapped.getMemberUnmarshaller(c);
}
}
static class CachingMarshallerSet implements MarshallerSet {
private final Map<Method, ArgumentMarshaller> cache =
new HashMap<Method, ArgumentMarshaller>();
private final Map<Type, ArgumentMarshaller> memberCache =
new HashMap<Type, ArgumentMarshaller>();
private final MarshallerSet wrapped;
public CachingMarshallerSet(MarshallerSet wrapped) {
this.wrapped = wrapped;
}
@Override
public ArgumentMarshaller getMarshaller(Method getter) {
synchronized (cache) {
ArgumentMarshaller marshaler = cache.get(getter);
if (marshaler != null) {
return marshaler;
}
marshaler = wrapped.getMarshaller(getter);
cache.put(getter, marshaler);
return marshaler;
}
}
@Override
public ArgumentMarshaller getMemberMarshaller(Type memberType) {
synchronized (memberCache) {
ArgumentMarshaller marshaller = memberCache.get(memberType);
if (marshaller != null) {
return marshaller;
}
marshaller = wrapped.getMemberMarshaller(memberType);
memberCache.put(memberType, marshaller);
return marshaller;
}
}
}
static class CachingUnmarshallerSet implements UnmarshallerSet {
private final Map<Method, ArgumentUnmarshaller> cache =
new HashMap<Method, ArgumentUnmarshaller>();
private final Map<Type, ArgumentUnmarshaller> memberCache =
new HashMap<Type, ArgumentUnmarshaller>();
private final UnmarshallerSet wrapped;
public CachingUnmarshallerSet(UnmarshallerSet wrapped) {
this.wrapped = wrapped;
}
@Override
public ArgumentUnmarshaller getUnmarshaller(
Method getter,
Method setter) {
synchronized (cache) {
ArgumentUnmarshaller unmarshaler = cache.get(getter);
if (unmarshaler != null) {
return unmarshaler;
}
unmarshaler = wrapped.getUnmarshaller(getter, setter);
cache.put(getter, unmarshaler);
return unmarshaler;
}
}
@Override
public ArgumentUnmarshaller getMemberUnmarshaller(Type memberType) {
synchronized (memberCache) {
ArgumentUnmarshaller unmarshaller = memberCache.get(memberType);
if (unmarshaller != null) {
return unmarshaller;
}
unmarshaller = wrapped.getMemberUnmarshaller(memberType);
memberCache.put(memberType, unmarshaller);
return unmarshaller;
}
}
}
/**
* {@link AttributeValue} converter with {@link ItemConverter}
*/
static class ItemConverterRuleFactory<V> implements RuleFactory<V> {
private final RuleFactory<V> typeConverters;
private final ItemConverter converter;
private final boolean customSchema;
ItemConverterRuleFactory(DynamoDBMapperConfig config, S3Link.Factory s3Links, RuleFactory<V> typeConverters) {
final ConversionSchema.Dependencies depends = new ConversionSchema.Dependencies().with(S3ClientCache.class, s3Links.getS3ClientCache());
final ConversionSchema schema = config.getConversionSchema();
this.customSchema = (schema != V1 && schema != V2_COMPATIBLE && schema != V2);
this.converter = schema.getConverter(depends);
this.typeConverters = typeConverters;
}
@Override
public Rule<V> getRule(ConvertibleType<V> type) {
if (customSchema && type.typeConverter() == null) {
return new ItemConverterRule<V>(type);
} else {
return typeConverters.getRule(type);
}
}
private final class ItemConverterRule<V> implements Rule<V>, DynamoDBTypeConverter<AttributeValue,V> {
private final ConvertibleType<V> type;
private ItemConverterRule(final ConvertibleType<V> type) {
this.type = type;
}
@Override
public boolean isAssignableFrom(ConvertibleType<?> type) {
return true;
}
@Override
public DynamoDBTypeConverter<AttributeValue,V> newConverter(ConvertibleType<V> type) {
return this;
}
@Override
public DynamoDBAttributeType getAttributeType() {
try {
return converter.getFieldModel(type.getter()).attributeType();
} catch (final DynamoDBMappingException no) {}
return DynamoDBAttributeType.NULL;
}
@Override
public AttributeValue convert(final V object) {
return converter.convert(type.getter(), object);
}
@Override
public V unconvert(final AttributeValue object) {
return (V)converter.unconvert(type.getter(), type.setter(), object);
}
}
}
ConversionSchemas() {
throw new UnsupportedOperationException();
}
}