org.springframework.core.convert.TypeDescriptor#equals ( )源码实例Demo

/**
 * Compare argument arrays and return information about whether they match.
 * A supplied type converter and conversionAllowed flag allow for matches to take
 * into account that a type may be transformed into a different type by the converter.
 * @param expectedArgTypes the types the method/constructor is expecting
 * @param suppliedArgTypes the types that are being supplied at the point of invocation
 * @param typeConverter a registered type converter
 * @return a MatchInfo object indicating what kind of match it was,
 * or {@code null} if it was not a match
 */
@Nullable
static ArgumentsMatchInfo compareArguments(
		List<TypeDescriptor> expectedArgTypes, List<TypeDescriptor> suppliedArgTypes, TypeConverter typeConverter) {

	Assert.isTrue(expectedArgTypes.size() == suppliedArgTypes.size(),
			"Expected argument types and supplied argument types should be arrays of same length");

	ArgumentsMatchKind match = ArgumentsMatchKind.EXACT;
	for (int i = 0; i < expectedArgTypes.size() && match != null; i++) {
		TypeDescriptor suppliedArg = suppliedArgTypes.get(i);
		TypeDescriptor expectedArg = expectedArgTypes.get(i);
		// The user may supply null - and that will be ok unless a primitive is expected
		if (suppliedArg == null) {
			if (expectedArg.isPrimitive()) {
				match = null;
			}
		}
		else if (!expectedArg.equals(suppliedArg))  {
			if (suppliedArg.isAssignableTo(expectedArg)) {
				if (match != ArgumentsMatchKind.REQUIRES_CONVERSION) {
					match = ArgumentsMatchKind.CLOSE;
				}
			}
			else if (typeConverter.canConvert(suppliedArg, expectedArg)) {
				match = ArgumentsMatchKind.REQUIRES_CONVERSION;
			}
			else {
				match = null;
			}
		}
	}
	return (match != null ? new ArgumentsMatchInfo(match) : null);
}
 

/**
 * Compare argument arrays and return information about whether they match.
 * A supplied type converter and conversionAllowed flag allow for matches to take
 * into account that a type may be transformed into a different type by the converter.
 * @param expectedArgTypes the types the method/constructor is expecting
 * @param suppliedArgTypes the types that are being supplied at the point of invocation
 * @param typeConverter a registered type converter
 * @return a MatchInfo object indicating what kind of match it was,
 * or {@code null} if it was not a match
 */
@Nullable
static ArgumentsMatchInfo compareArguments(
		List<TypeDescriptor> expectedArgTypes, List<TypeDescriptor> suppliedArgTypes, TypeConverter typeConverter) {

	Assert.isTrue(expectedArgTypes.size() == suppliedArgTypes.size(),
			"Expected argument types and supplied argument types should be arrays of same length");

	ArgumentsMatchKind match = ArgumentsMatchKind.EXACT;
	for (int i = 0; i < expectedArgTypes.size() && match != null; i++) {
		TypeDescriptor suppliedArg = suppliedArgTypes.get(i);
		TypeDescriptor expectedArg = expectedArgTypes.get(i);
		// The user may supply null - and that will be ok unless a primitive is expected
		if (suppliedArg == null) {
			if (expectedArg.isPrimitive()) {
				match = null;
			}
		}
		else if (!expectedArg.equals(suppliedArg))  {
			if (suppliedArg.isAssignableTo(expectedArg)) {
				if (match != ArgumentsMatchKind.REQUIRES_CONVERSION) {
					match = ArgumentsMatchKind.CLOSE;
				}
			}
			else if (typeConverter.canConvert(suppliedArg, expectedArg)) {
				match = ArgumentsMatchKind.REQUIRES_CONVERSION;
			}
			else {
				match = null;
			}
		}
	}
	return (match != null ? new ArgumentsMatchInfo(match) : null);
}
 

/**
 * Compare argument arrays and return information about whether they match.
 * A supplied type converter and conversionAllowed flag allow for matches to take
 * into account that a type may be transformed into a different type by the converter.
 * @param expectedArgTypes the types the method/constructor is expecting
 * @param suppliedArgTypes the types that are being supplied at the point of invocation
 * @param typeConverter a registered type converter
 * @return a MatchInfo object indicating what kind of match it was,
 * or {@code null} if it was not a match
 */
static ArgumentsMatchInfo compareArguments(
		List<TypeDescriptor> expectedArgTypes, List<TypeDescriptor> suppliedArgTypes, TypeConverter typeConverter) {

	Assert.isTrue(expectedArgTypes.size() == suppliedArgTypes.size(),
			"Expected argument types and supplied argument types should be arrays of same length");

	ArgumentsMatchKind match = ArgumentsMatchKind.EXACT;
	for (int i = 0; i < expectedArgTypes.size() && match != null; i++) {
		TypeDescriptor suppliedArg = suppliedArgTypes.get(i);
		TypeDescriptor expectedArg = expectedArgTypes.get(i);
		if (!expectedArg.equals(suppliedArg)) {
			// The user may supply null - and that will be ok unless a primitive is expected
			if (suppliedArg == null) {
				if (expectedArg.isPrimitive()) {
					match = null;
				}
			}
			else {
				if (suppliedArg.isAssignableTo(expectedArg)) {
					if (match != ArgumentsMatchKind.REQUIRES_CONVERSION) {
						match = ArgumentsMatchKind.CLOSE;
					}
				}
				else if (typeConverter.canConvert(suppliedArg, expectedArg)) {
					match = ArgumentsMatchKind.REQUIRES_CONVERSION;
				}
				else {
					match = null;
				}
			}
		}
	}
	return (match != null ? new ArgumentsMatchInfo(match) : null);
}
 

/**
 * Compare argument arrays and return information about whether they match.
 * A supplied type converter and conversionAllowed flag allow for matches to take
 * into account that a type may be transformed into a different type by the converter.
 * @param expectedArgTypes the types the method/constructor is expecting
 * @param suppliedArgTypes the types that are being supplied at the point of invocation
 * @param typeConverter a registered type converter
 * @return a MatchInfo object indicating what kind of match it was,
 * or {@code null} if it was not a match
 */
static ArgumentsMatchInfo compareArguments(
		List<TypeDescriptor> expectedArgTypes, List<TypeDescriptor> suppliedArgTypes, TypeConverter typeConverter) {

	Assert.isTrue(expectedArgTypes.size() == suppliedArgTypes.size(),
			"Expected argument types and supplied argument types should be arrays of same length");

	ArgumentsMatchKind match = ArgumentsMatchKind.EXACT;
	for (int i = 0; i < expectedArgTypes.size() && match != null; i++) {
		TypeDescriptor suppliedArg = suppliedArgTypes.get(i);
		TypeDescriptor expectedArg = expectedArgTypes.get(i);
		if (!expectedArg.equals(suppliedArg)) {
			// The user may supply null - and that will be ok unless a primitive is expected
			if (suppliedArg == null) {
				if (expectedArg.isPrimitive()) {
					match = null;
				}
			}
			else {
				if (suppliedArg.isAssignableTo(expectedArg)) {
					if (match != ArgumentsMatchKind.REQUIRES_CONVERSION) {
						match = ArgumentsMatchKind.CLOSE;
					}
				}
				else if (typeConverter.canConvert(suppliedArg, expectedArg)) {
					match = ArgumentsMatchKind.REQUIRES_CONVERSION;
				}
				else {
					match = null;
				}
			}
		}
	}
	return (match != null ? new ArgumentsMatchInfo(match) : null);
}
 

@Override
public boolean matches(TypeDescriptor sourceType, TypeDescriptor targetType) {
	return !sourceType.equals(targetType);
}
 

@Override
public boolean matches(TypeDescriptor sourceType, TypeDescriptor targetType) {
	return !sourceType.equals(targetType);
}
 

@Override
public boolean matches(TypeDescriptor sourceType, TypeDescriptor targetType) {
	return !sourceType.equals(targetType);
}
 

@Override
public boolean matches(TypeDescriptor sourceType, TypeDescriptor targetType) {
	return !sourceType.equals(targetType);
}