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OPENJPA-2911 newEmbeddedPCData via ASM

This commit is contained in:
Mark Struberg 2023-07-25 11:04:47 +02:00
parent 1f8db2ade4
commit 0ea92f44a4
1 changed files with 28 additions and 20 deletions
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48
openjpa-kernel/src/main/java/org/apache/openjpa/enhance/PCDataGenerator.java
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@ -172,11 +172,11 @@ public class PCDataGenerator extends DynamicStorageGenerator {
addLoadMethod(bc, meta);
addLoadWithFieldsMethod(bc, meta);
addStoreMethods(bc, meta);
addNewEmbedded(bc);
BCClass _bc = new Project().loadClass(bc.getClassNode().name.replace("/", "."));
AsmHelper.readIntoBCClass(bc, _bc);
addNewEmbedded(_bc);
addGetData(_bc);
bc = AsmHelper.toClassNode(bc.getProject(), _bc);
@ -1205,27 +1205,35 @@ public class PCDataGenerator extends DynamicStorageGenerator {
Type.getType(OpenJPAStateManager.class), Type.INT_TYPE, Type.BOOLEAN_TYPE)));
}
private void addNewEmbedded(BCClass bc) {
// void newEmbeddedPCData(OpenJPAStateManager embedded)
BCMethod meth = bc.declareMethod("newEmbeddedPCData", PCData.class,
new Class[]{ OpenJPAStateManager.class });
Code code = meth.getCode(true);
private void addNewEmbedded(ClassNodeTracker cnt) {
ClassNode classNode = cnt.getClassNode();
MethodNode meth = new MethodNode(Opcodes.ACC_PUBLIC,
"newEmbeddedPCData",
Type.getMethodDescriptor(Type.getType(PCData.class), Type.getType(OpenJPAStateManager.class)),
null, null);
classNode.methods.add(meth);
InsnList instructions = meth.instructions;
// return getStorageGenerator().generatePCData
// (sm.getId(), sm.getMetaData());
code.aload().setThis();
code.getfield().setField("storageGenerator", PCDataGenerator.class);
code.aload().setParam(0);
code.invokeinterface().setMethod(OpenJPAStateManager.class,
"getId", Object.class, null);
code.aload().setParam(0);
code.invokeinterface().setMethod(OpenJPAStateManager.class,
"getMetaData", ClassMetaData.class, null);
code.invokevirtual().setMethod(PCDataGenerator.class,
"generatePCData", PCData.class, new Class[]
{ Object.class, ClassMetaData.class });
code.areturn();
code.calculateMaxLocals();
code.calculateMaxStack();
instructions.add(new VarInsnNode(Opcodes.ALOAD, 0)); // this
instructions.add(new FieldInsnNode(Opcodes.GETFIELD, classNode.name, "storageGenerator", Type.getDescriptor(PCDataGenerator.class)));
instructions.add(new VarInsnNode(Opcodes.ALOAD, 1)); // 1st parameter OpenJPAStateManager
instructions.add(new MethodInsnNode(Opcodes.INVOKEINTERFACE,
Type.getInternalName(OpenJPAStateManager.class),
"getId",
Type.getMethodDescriptor(AsmHelper.TYPE_OBJECT)));
instructions.add(new VarInsnNode(Opcodes.ALOAD, 1)); // 1st parameter OpenJPAStateManager
instructions.add(new MethodInsnNode(Opcodes.INVOKEINTERFACE,
Type.getInternalName(OpenJPAStateManager.class),
"getMetaData",
Type.getMethodDescriptor(Type.getType(ClassMetaData.class))));
instructions.add(new MethodInsnNode(Opcodes.INVOKEVIRTUAL,
Type.getInternalName(PCDataGenerator.class),
"generatePCData",
Type.getMethodDescriptor(Type.getType(PCData.class),
AsmHelper.TYPE_OBJECT, Type.getType(ClassMetaData.class))));
instructions.add(new InsnNode(Opcodes.ARETURN));
}
private void addGetData(BCClass bc) {