下面列出了怎么用org.springframework.core.convert.converter.GenericConverter.ConvertiblePair的API类实例代码及写法,或者点击链接到github查看源代码。
/**
* Find a {@link GenericConverter} given a source and target type.
* <p>This method will attempt to match all possible converters by working
* through the class and interface hierarchy of the types.
* @param sourceType the source type
* @param targetType the target type
* @return a matching {@link GenericConverter}, or {@code null} if none found
*/
@Nullable
public GenericConverter find(TypeDescriptor sourceType, TypeDescriptor targetType) {
// Search the full type hierarchy
List<Class<?>> sourceCandidates = getClassHierarchy(sourceType.getType());
List<Class<?>> targetCandidates = getClassHierarchy(targetType.getType());
for (Class<?> sourceCandidate : sourceCandidates) {
for (Class<?> targetCandidate : targetCandidates) {
ConvertiblePair convertiblePair = new ConvertiblePair(sourceCandidate, targetCandidate);
GenericConverter converter = getRegisteredConverter(sourceType, targetType, convertiblePair);
if (converter != null) {
return converter;
}
}
}
return null;
}
@Nullable
private GenericConverter getRegisteredConverter(TypeDescriptor sourceType,
TypeDescriptor targetType, ConvertiblePair convertiblePair) {
// Check specifically registered converters
ConvertersForPair convertersForPair = this.converters.get(convertiblePair);
if (convertersForPair != null) {
GenericConverter converter = convertersForPair.getConverter(sourceType, targetType);
if (converter != null) {
return converter;
}
}
// Check ConditionalConverters for a dynamic match
for (GenericConverter globalConverter : this.globalConverters) {
if (((ConditionalConverter) globalConverter).matches(sourceType, targetType)) {
return globalConverter;
}
}
return null;
}
/**
* Find a {@link GenericConverter} given a source and target type.
* <p>This method will attempt to match all possible converters by working
* through the class and interface hierarchy of the types.
* @param sourceType the source type
* @param targetType the target type
* @return a matching {@link GenericConverter}, or {@code null} if none found
*/
@Nullable
public GenericConverter find(TypeDescriptor sourceType, TypeDescriptor targetType) {
// Search the full type hierarchy
List<Class<?>> sourceCandidates = getClassHierarchy(sourceType.getType());
List<Class<?>> targetCandidates = getClassHierarchy(targetType.getType());
for (Class<?> sourceCandidate : sourceCandidates) {
for (Class<?> targetCandidate : targetCandidates) {
ConvertiblePair convertiblePair = new ConvertiblePair(sourceCandidate, targetCandidate);
GenericConverter converter = getRegisteredConverter(sourceType, targetType, convertiblePair);
if (converter != null) {
return converter;
}
}
}
return null;
}
@Nullable
private GenericConverter getRegisteredConverter(TypeDescriptor sourceType,
TypeDescriptor targetType, ConvertiblePair convertiblePair) {
// Check specifically registered converters
ConvertersForPair convertersForPair = this.converters.get(convertiblePair);
if (convertersForPair != null) {
GenericConverter converter = convertersForPair.getConverter(sourceType, targetType);
if (converter != null) {
return converter;
}
}
// Check ConditionalConverters for a dynamic match
for (GenericConverter globalConverter : this.globalConverters) {
if (((ConditionalConverter) globalConverter).matches(sourceType, targetType)) {
return globalConverter;
}
}
return null;
}
/**
* Find a {@link GenericConverter} given a source and target type.
* <p>This method will attempt to match all possible converters by working
* through the class and interface hierarchy of the types.
* @param sourceType the source type
* @param targetType the target type
* @return a matching {@link GenericConverter}, or {@code null} if none found
*/
public GenericConverter find(TypeDescriptor sourceType, TypeDescriptor targetType) {
// Search the full type hierarchy
List<Class<?>> sourceCandidates = getClassHierarchy(sourceType.getType());
List<Class<?>> targetCandidates = getClassHierarchy(targetType.getType());
for (Class<?> sourceCandidate : sourceCandidates) {
for (Class<?> targetCandidate : targetCandidates) {
ConvertiblePair convertiblePair = new ConvertiblePair(sourceCandidate, targetCandidate);
GenericConverter converter = getRegisteredConverter(sourceType, targetType, convertiblePair);
if (converter != null) {
return converter;
}
}
}
return null;
}
private GenericConverter getRegisteredConverter(TypeDescriptor sourceType,
TypeDescriptor targetType, ConvertiblePair convertiblePair) {
// Check specifically registered converters
ConvertersForPair convertersForPair = this.converters.get(convertiblePair);
if (convertersForPair != null) {
GenericConverter converter = convertersForPair.getConverter(sourceType, targetType);
if (converter != null) {
return converter;
}
}
// Check ConditionalConverters for a dynamic match
for (GenericConverter globalConverter : this.globalConverters) {
if (((ConditionalConverter) globalConverter).matches(sourceType, targetType)) {
return globalConverter;
}
}
return null;
}
Class<?> getCustomTarget(Class<?> sourceType, Class<?> expectedTargetType, Iterable<ConvertiblePair> pairs) {
Assert.notNull(sourceType);
Assert.notNull(pairs);
ConvertiblePair expectedTypePair = new ConvertiblePair(sourceType,
expectedTargetType != null ? expectedTargetType : Any.class);
if (cache.containsKey(expectedTypePair)) {
Class<?> cachedTargetType = cache.get(expectedTypePair);
return cachedTargetType != Any.class ? cachedTargetType : null;
}
for (ConvertiblePair typePair : pairs) {
if (typePair.getSourceType().isAssignableFrom(sourceType)) {
Class<?> targetType = typePair.getTargetType();
if (expectedTargetType == null || targetType.isAssignableFrom(expectedTargetType)) {
cache.putIfAbsent(expectedTypePair, targetType);
return targetType;
}
}
}
cache.putIfAbsent(expectedTypePair, Any.class);
return null;
}
private void registerConversion(Object converter) {
Class<?> type = converter.getClass();
boolean isWriting = type.isAnnotationPresent(WritingConverter.class);
boolean isReading = type.isAnnotationPresent(ReadingConverter.class);
if (!isReading && !isWriting) {
isReading = true;
isWriting = true;
}
if (converter instanceof GenericConverter) {
GenericConverter genericConverter = (GenericConverter) converter;
for (ConvertiblePair pair : genericConverter.getConvertibleTypes()) {
register(new ConvertibleContext(pair, isReading, isWriting));
}
} else if (converter instanceof Converter) {
Class<?>[] arguments = GenericTypeResolver.resolveTypeArguments(converter.getClass(), Converter.class);
register(new ConvertibleContext(arguments[0], arguments[1], isReading, isWriting));
} else {
throw new IllegalArgumentException(
"Unsupported Converter type! Expected either GenericConverter if Converter.");
}
}
/**
* Find a {@link GenericConverter} given a source and target type.
* <p>This method will attempt to match all possible converters by working
* through the class and interface hierarchy of the types.
* @param sourceType the source type
* @param targetType the target type
* @return a matching {@link GenericConverter}, or {@code null} if none found
*/
public GenericConverter find(TypeDescriptor sourceType, TypeDescriptor targetType) {
// Search the full type hierarchy
List<Class<?>> sourceCandidates = getClassHierarchy(sourceType.getType());
List<Class<?>> targetCandidates = getClassHierarchy(targetType.getType());
for (Class<?> sourceCandidate : sourceCandidates) {
for (Class<?> targetCandidate : targetCandidates) {
ConvertiblePair convertiblePair = new ConvertiblePair(sourceCandidate, targetCandidate);
GenericConverter converter = getRegisteredConverter(sourceType, targetType, convertiblePair);
if (converter != null) {
return converter;
}
}
}
return null;
}
private GenericConverter getRegisteredConverter(TypeDescriptor sourceType,
TypeDescriptor targetType, ConvertiblePair convertiblePair) {
// Check specifically registered converters
ConvertersForPair convertersForPair = this.converters.get(convertiblePair);
if (convertersForPair != null) {
GenericConverter converter = convertersForPair.getConverter(sourceType, targetType);
if (converter != null) {
return converter;
}
}
// Check ConditionalConverters for a dynamic match
for (GenericConverter globalConverter : this.globalConverters) {
if (((ConditionalConverter) globalConverter).matches(sourceType, targetType)) {
return globalConverter;
}
}
return null;
}
@Override
public void addConverterFactory(ConverterFactory<?, ?> factory) {
ResolvableType[] typeInfo = getRequiredTypeInfo(factory.getClass(), ConverterFactory.class);
if (typeInfo == null && factory instanceof DecoratingProxy) {
typeInfo = getRequiredTypeInfo(((DecoratingProxy) factory).getDecoratedClass(), ConverterFactory.class);
}
if (typeInfo == null) {
throw new IllegalArgumentException("Unable to determine source type <S> and target type <T> for your " +
"ConverterFactory [" + factory.getClass().getName() + "]; does the class parameterize those types?");
}
addConverter(new ConverterFactoryAdapter(factory,
new ConvertiblePair(typeInfo[0].toClass(), typeInfo[1].toClass())));
}
public void add(GenericConverter converter) {
Set<ConvertiblePair> convertibleTypes = converter.getConvertibleTypes();
if (convertibleTypes == null) {
Assert.state(converter instanceof ConditionalConverter,
"Only conditional converters may return null convertible types");
this.globalConverters.add(converter);
}
else {
for (ConvertiblePair convertiblePair : convertibleTypes) {
ConvertersForPair convertersForPair = getMatchableConverters(convertiblePair);
convertersForPair.add(converter);
}
}
}
private ConvertersForPair getMatchableConverters(ConvertiblePair convertiblePair) {
ConvertersForPair convertersForPair = this.converters.get(convertiblePair);
if (convertersForPair == null) {
convertersForPair = new ConvertersForPair();
this.converters.put(convertiblePair, convertersForPair);
}
return convertersForPair;
}
@Override
public void addConverterFactory(ConverterFactory<?, ?> factory) {
ResolvableType[] typeInfo = getRequiredTypeInfo(factory.getClass(), ConverterFactory.class);
if (typeInfo == null && factory instanceof DecoratingProxy) {
typeInfo = getRequiredTypeInfo(((DecoratingProxy) factory).getDecoratedClass(), ConverterFactory.class);
}
if (typeInfo == null) {
throw new IllegalArgumentException("Unable to determine source type <S> and target type <T> for your " +
"ConverterFactory [" + factory.getClass().getName() + "]; does the class parameterize those types?");
}
addConverter(new ConverterFactoryAdapter(factory,
new ConvertiblePair(typeInfo[0].toClass(), typeInfo[1].toClass())));
}
public void add(GenericConverter converter) {
Set<ConvertiblePair> convertibleTypes = converter.getConvertibleTypes();
if (convertibleTypes == null) {
Assert.state(converter instanceof ConditionalConverter,
"Only conditional converters may return null convertible types");
this.globalConverters.add(converter);
}
else {
for (ConvertiblePair convertiblePair : convertibleTypes) {
ConvertersForPair convertersForPair = getMatchableConverters(convertiblePair);
convertersForPair.add(converter);
}
}
}
private ConvertersForPair getMatchableConverters(ConvertiblePair convertiblePair) {
ConvertersForPair convertersForPair = this.converters.get(convertiblePair);
if (convertersForPair == null) {
convertersForPair = new ConvertersForPair();
this.converters.put(convertiblePair, convertersForPair);
}
return convertersForPair;
}
@Override
public void addConverterFactory(ConverterFactory<?, ?> factory) {
ResolvableType[] typeInfo = getRequiredTypeInfo(factory.getClass(), ConverterFactory.class);
if (typeInfo == null && factory instanceof DecoratingProxy) {
typeInfo = getRequiredTypeInfo(((DecoratingProxy) factory).getDecoratedClass(), ConverterFactory.class);
}
if (typeInfo == null) {
throw new IllegalArgumentException("Unable to determine source type <S> and target type <T> for your " +
"ConverterFactory [" + factory.getClass().getName() + "]; does the class parameterize those types?");
}
addConverter(new ConverterFactoryAdapter(factory,
new ConvertiblePair(typeInfo[0].resolve(), typeInfo[1].resolve())));
}
public void add(GenericConverter converter) {
Set<ConvertiblePair> convertibleTypes = converter.getConvertibleTypes();
if (convertibleTypes == null) {
Assert.state(converter instanceof ConditionalConverter,
"Only conditional converters may return null convertible types");
this.globalConverters.add(converter);
}
else {
for (ConvertiblePair convertiblePair : convertibleTypes) {
ConvertersForPair convertersForPair = getMatchableConverters(convertiblePair);
convertersForPair.add(converter);
}
}
}
private ConvertersForPair getMatchableConverters(ConvertiblePair convertiblePair) {
ConvertersForPair convertersForPair = this.converters.get(convertiblePair);
if (convertersForPair == null) {
convertersForPair = new ConvertersForPair();
this.converters.put(convertiblePair, convertersForPair);
}
return convertersForPair;
}
/**
* Create new instance registering given converters
*
* @param converters
*/
@SuppressWarnings({ "unchecked", "rawtypes" })
public CustomConversions(List converters) {
this.converters = (converters != null ? new ArrayList<Object>(converters) : new ArrayList<Object>());
this.readingPairs = new HashSet<ConvertiblePair>();
this.writingPairs = new HashSet<ConvertiblePair>();
this.customSimpleTypes = new HashSet<Class<?>>();
this.simpleTypeHolder = new SimpleTypeHolder(customSimpleTypes, SolrSimpleTypes.HOLDER);
this.converters.add(GeoConverters.StringToPointConverter.INSTANCE);
this.converters.add(GeoConverters.Point3DToStringConverter.INSTANCE);
this.converters.add(new SolrjConverters.UpdateToSolrInputDocumentConverter());
// Register Joda-Time converters only if Joda-Time was found in the
// classpath.
if (VersionUtil.isJodaTimeAvailable()) {
this.converters.add(DateTimeConverters.DateToJodaDateTimeConverter.INSTANCE);
this.converters.add(DateTimeConverters.JodaDateTimeToDateConverter.INSTANCE);
this.converters.add(DateTimeConverters.DateToLocalDateTimeConverter.INSTANCE);
this.converters.add(DateTimeConverters.JodaLocalDateTimeToDateConverter.INSTANCE);
}
for (Object converter : this.converters) {
registerConversion(converter);
}
}
private void register(ConvertibleContext context) {
ConvertiblePair pair = context.getConvertible();
if (context.isReading()) {
readingPairs.add(pair);
}
if (context.isWriting()) {
writingPairs.add(pair);
customSimpleTypes.add(pair.getSourceType());
}
}
@Override
public void addConverterFactory(ConverterFactory<?, ?> converterFactory) {
ResolvableType[] typeInfo = getRequiredTypeInfo(converterFactory, ConverterFactory.class);
Assert.notNull(typeInfo, "Unable to the determine source type <S> and target range type R which your " +
"ConverterFactory<S, R> converts between; declare these generic types.");
addConverter(new ConverterFactoryAdapter(converterFactory,
new ConvertiblePair(typeInfo[0].resolve(), typeInfo[1].resolve())));
}
public void add(GenericConverter converter) {
Set<ConvertiblePair> convertibleTypes = converter.getConvertibleTypes();
if (convertibleTypes == null) {
Assert.state(converter instanceof ConditionalConverter,
"Only conditional converters may return null convertible types");
this.globalConverters.add(converter);
}
else {
for (ConvertiblePair convertiblePair : convertibleTypes) {
ConvertersForPair convertersForPair = getMatchableConverters(convertiblePair);
convertersForPair.add(converter);
}
}
}
private ConvertersForPair getMatchableConverters(ConvertiblePair convertiblePair) {
ConvertersForPair convertersForPair = this.converters.get(convertiblePair);
if (convertersForPair == null) {
convertersForPair = new ConvertersForPair();
this.converters.put(convertiblePair, convertersForPair);
}
return convertersForPair;
}
/**
* Test method for {@link io.springlets.format.EntityToStringConverter#getConvertibleTypes()}.
*/
@Test
public void testGetConvertibleTypes() {
// Prepare
// Exercise
Set<ConvertiblePair> convertibleTypes = converter.getConvertibleTypes();
// Validate
assertThat(convertibleTypes).isNotEmpty()
.containsExactly(new ConvertiblePair(Object.class, String.class));
}
@Test
public void checkValidConvertibleTypes() {
// Prepare
// Exercise
Set<ConvertiblePair> convertibleTypes = converter.getConvertibleTypes();
// Validate
assertThat(convertibleTypes).isNotEmpty()
.containsExactly(new ConvertiblePair(Enum.class, String.class));
}
/**
* Creates a new {@link ConverterRegistration}.
*
* @param convertiblePair must not be {@literal null}.
* @param isReading whether to force to consider the converter for reading.
* @param isWriting whether to force to consider the converter for reading.
*/
public ConverterRegistration(ConvertiblePair convertiblePair, boolean isReading, boolean isWriting) {
notNull(convertiblePair, "Convertible Pair is required");
this.convertiblePair = convertiblePair;
reading = isReading;
writing = isWriting;
}
public ConverterAdapter(Converter<?, ?> converter, ResolvableType sourceType, ResolvableType targetType) {
this.converter = (Converter<Object, Object>) converter;
this.typeInfo = new ConvertiblePair(sourceType.toClass(), targetType.toClass());
this.targetType = targetType;
}
@Override
public Set<ConvertiblePair> getConvertibleTypes() {
return Collections.singleton(this.typeInfo);
}
public ConverterFactoryAdapter(ConverterFactory<?, ?> converterFactory, ConvertiblePair typeInfo) {
this.converterFactory = (ConverterFactory<Object, Object>) converterFactory;
this.typeInfo = typeInfo;
}