private MethodMetadata methodExists(
JavaSymbolName methodName, List<AnnotatedJavaType> paramTypes) {
// We have no access to method parameter information, so we scan by name alone and treat any
// match as authoritative
// We do not scan the superclass, as the caller is expected to know we'll only scan the current
// class
for (MethodMetadata method : governorTypeDetails.getDeclaredMethods()) {
if (method.getMethodName().equals(methodName)
&& method.getParameterTypes().equals(paramTypes)) {
// Found a method of the expected name; we won't check method parameters though
return method;
}
}
return null;
}
private void doModification(final MethodMetadata method, final CustomData customData) {
MemberHoldingTypeDetails memberHoldingTypeDetails =
memberHoldingTypeDetailsMap.get(method.getDeclaredByMetadataId());
if (memberHoldingTypeDetails != null) {
MethodMetadata matchedMethod =
memberHoldingTypeDetails.getMethod(
method.getMethodName(),
AnnotatedJavaType.convertFromAnnotatedJavaTypes(method.getParameterTypes()));
if (matchedMethod != null
&& !matchedMethod.getCustomData().keySet().containsAll(customData.keySet())) {
TypeDetailsBuilder typeDetailsBuilder = getTypeDetailsBuilder(memberHoldingTypeDetails);
typeDetailsBuilder.addDataToMethod(method, customData);
changed = true;
}
}
}
public void addDataToMethod(final MethodMetadata replacement, final CustomData customData) {
// If the MIDs don't match then the proposed can't be a replacement
if (!replacement.getDeclaredByMetadataId().equals(getDeclaredByMetadataId())) {
return;
}
for (MethodMetadataBuilder existingMethod : getDeclaredMethods()) {
if (existingMethod.getMethodName().equals(replacement.getMethodName())) {
if (AnnotatedJavaType.convertFromAnnotatedJavaTypes(existingMethod.getParameterTypes())
.equals(
AnnotatedJavaType.convertFromAnnotatedJavaTypes(
replacement.getParameterTypes()))) {
for (Object key : customData.keySet()) {
existingMethod.putCustomData(key, customData.get(key));
}
break;
}
}
}
}
/**
* @return the static utility entityManager() method used by other methods to obtain entity
* manager and available as a utility for user code (never returns nulls)
*/
public MethodMetadata getEntityManagerMethod() {
if (parent != null) {
// The parent is required to guarantee this is available
return parent.getEntityManagerMethod();
}
// Method definition to find or build
final JavaSymbolName methodName = new JavaSymbolName(ENTITY_MANAGER_METHOD_NAME);
final JavaType[] parameterTypes = {};
final JavaType returnType = ENTITY_MANAGER;
// Locate user-defined method
final MethodMetadata userMethod = getGovernorMethod(methodName, parameterTypes);
if (userMethod != null) {
Assert.isTrue(
userMethod.getReturnType().equals(returnType),
"Method '"
+ methodName
+ "' on '"
+ destination
+ "' must return '"
+ returnType.getNameIncludingTypeParameters()
+ "'");
return userMethod;
}
// Create method
final InvocableMemberBodyBuilder bodyBuilder = new InvocableMemberBodyBuilder();
if (Modifier.isAbstract(governorTypeDetails.getModifier())) {
// Create an anonymous inner class that extends the abstract class (no-arg constructor is
// available as this is a JPA entity)
bodyBuilder.appendFormalLine(
ENTITY_MANAGER.getNameIncludingTypeParameters(
false, builder.getImportRegistrationResolver())
+ " em = new "
+ destination.getSimpleTypeName()
+ "() {");
// Handle any abstract methods in this class
bodyBuilder.indent();
for (final MethodMetadata method : governorTypeDetails.getMethods()) {
if (Modifier.isAbstract(method.getModifier())) {
final StringBuilder params = new StringBuilder();
int i = -1;
final List<AnnotatedJavaType> types = method.getParameterTypes();
for (final JavaSymbolName name : method.getParameterNames()) {
i++;
if (i > 0) {
params.append(", ");
}
final AnnotatedJavaType type = types.get(i);
params.append(type.toString()).append(" ").append(name);
}
final int newModifier = method.getModifier() - Modifier.ABSTRACT;
bodyBuilder.appendFormalLine(
Modifier.toString(newModifier)
+ " "
+ method.getReturnType().getNameIncludingTypeParameters()
+ " "
+ method.getMethodName().getSymbolName()
+ "("
+ params.toString()
+ ") {");
bodyBuilder.indent();
bodyBuilder.appendFormalLine("throw new UnsupportedOperationException();");
bodyBuilder.indentRemove();
bodyBuilder.appendFormalLine("}");
}
}
bodyBuilder.indentRemove();
bodyBuilder.appendFormalLine(
"}." + getEntityManagerField().getFieldName().getSymbolName() + ";");
} else {
// Instantiate using the no-argument constructor (we know this is available as the entity must
// comply with the JPA no-arg constructor requirement)
bodyBuilder.appendFormalLine(
ENTITY_MANAGER.getNameIncludingTypeParameters(
false, builder.getImportRegistrationResolver())
+ " em = new "
+ destination.getSimpleTypeName()
+ "()."
+ getEntityManagerField().getFieldName().getSymbolName()
+ ";");
}
bodyBuilder.appendFormalLine(
"if (em == null) throw new IllegalStateException(\"Entity manager has not been injected (is the Spring Aspects JAR configured as an AJC/AJDT aspects library?)\");");
bodyBuilder.appendFormalLine("return em;");
final int modifier = Modifier.PUBLIC | Modifier.STATIC | Modifier.FINAL;
final MethodMetadataBuilder methodBuilder =
new MethodMetadataBuilder(
getId(),
modifier,
methodName,
returnType,
AnnotatedJavaType.convertFromJavaTypes(parameterTypes),
new ArrayList<JavaSymbolName>(),
bodyBuilder);
return methodBuilder.build();
}
