mirror of https://github.com/apache/openjpa.git
OPENJPA-2911 addLoadMethod via ASM
This commit is contained in:
Mark Struberg
parent
e62e7eaa7c
commit
1fa918c861
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@ -173,11 +173,11 @@ public class PCDataGenerator extends DynamicStorageGenerator {
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addGetType(bc, meta);
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addVersionMethods(bc);
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addFieldImplDataMethods(bc, meta);
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addLoadMethod(bc, meta);
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BCClass _bc = new Project().loadClass(bc.getClassNode().name.replace("/", "."));
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AsmHelper.readIntoBCClass(bc, _bc);
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addLoadMethod(_bc, meta);
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addLoadWithFieldsMethod(_bc, meta);
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addStoreMethods(_bc, meta);
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addNewEmbedded(_bc);
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@ -628,59 +628,86 @@ public class PCDataGenerator extends DynamicStorageGenerator {
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}
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}
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private void addLoadMethod(BCClass bc, ClassMetaData meta) {
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// public void load(OpenJPAStateManager sm, FetchConfiguration fetch,
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// Object context)
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Code code = addLoadMethod(bc, false);
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FieldMetaData[] fmds = meta.getFields();
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Collection<Instruction> jumps = new LinkedList<>();
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Collection<Instruction> jumps2;
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private void addLoadMethod(ClassNodeTracker cnt, ClassMetaData meta) {
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final ClassNode classNode = cnt.getClassNode();
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int local = code.getNextLocalsIndex();
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code.constant().setNull();
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code.astore().setLocal(local);
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int inter = code.getNextLocalsIndex();
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code.constant().setNull();
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code.astore().setLocal(inter);
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// public void load(OpenJPAStateManager sm, FetchConfiguration fetch, Object context)
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MethodNode meth = addLoadMethod(cnt, false);
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InsnList instructions = meth.instructions;
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FieldMetaData[] fmds = meta.getFields();
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int localVarPos = AsmHelper.getLocalVarPos(meth);
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instructions.add(new InsnNode(Opcodes.ACONST_NULL));
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instructions.add(new VarInsnNode(Opcodes.ASTORE, localVarPos));
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int interVarPos = localVarPos + 1;
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instructions.add(new InsnNode(Opcodes.ACONST_NULL));
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instructions.add(new VarInsnNode(Opcodes.ASTORE, interVarPos));
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int objectCount = 0;
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boolean intermediate;
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LabelNode lblEndIf = null;
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for (int i = 0; i < fmds.length; i++) {
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jumps2 = new LinkedList<>();
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intermediate = usesIntermediate(fmds[i]);
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setTarget(code.aload().setThis(), jumps);
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// if (loaded.get(i)) or (!loaded.get(i)) depending on inter resp
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code.getfield().setField("loaded", BitSet.class);
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code.constant().setValue(i);
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code.invokevirtual().setMethod(BitSet.class, "get",
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boolean.class, new Class[]{ int.class });
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jumps.add(code.ifne());
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if (intermediate)
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addLoadIntermediate(code, i, objectCount, jumps2, inter);
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jumps2.add(code.go2());
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if (lblEndIf != null) {
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instructions.add(lblEndIf);
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}
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lblEndIf = new LabelNode();
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intermediate = usesIntermediate(fmds[i]);
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instructions.add(new VarInsnNode(Opcodes.ALOAD, 0)); // this
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// if (loaded.get(i)) or (!loaded.get(i)) depending on inter resp
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instructions.add(new FieldInsnNode(Opcodes.GETFIELD, classNode.name, "loaded", Type.getDescriptor(BitSet.class)));
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instructions.add(AsmHelper.getLoadConstantInsn(i));
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instructions.add(new MethodInsnNode(Opcodes.INVOKEVIRTUAL,
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Type.getInternalName(BitSet.class),
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"get",
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Type.getMethodDescriptor(Type.BOOLEAN_TYPE, Type.INT_TYPE)));
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instructions.add(new JumpInsnNode(intermediate ? Opcodes.IFNE : Opcodes.IFEQ, lblEndIf));
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// if (fetch.requiresFetch(fmds[i])!=FetchConfiguration.FETCH_NONE)
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setTarget(code.aload().setParam(1), jumps);
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code.aload().setParam(0);
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code.invokeinterface().setMethod(OpenJPAStateManager.class,
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"getMetaData", ClassMetaData.class, null);
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code.constant().setValue(fmds[i].getIndex());
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code.invokevirtual().setMethod(ClassMetaData.class,
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"getField", FieldMetaData.class, new Class[]{int.class});
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code.invokeinterface().setMethod (FetchConfiguration.class,
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"requiresFetch", int.class, new Class[]{FieldMetaData.class});
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code.constant().setValue(FetchConfiguration.FETCH_NONE);
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jumps2.add(code.ificmpeq());
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addLoad(bc, code, fmds[i], objectCount, local, false);
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jumps = jumps2;
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if (replaceType(fmds[i]) >= JavaTypes.OBJECT)
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if (intermediate) {
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addLoadIntermediate(classNode, instructions, i, objectCount, interVarPos);
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LabelNode lblElse = lblEndIf;
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lblEndIf = new LabelNode();
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instructions.add(new JumpInsnNode(Opcodes.GOTO, lblEndIf));
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instructions.add(lblElse);
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}
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instructions.add(new VarInsnNode(Opcodes.ALOAD, 2)); // 2nd param FetchConfiguration
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instructions.add(new VarInsnNode(Opcodes.ALOAD, 1)); // 1st param OpenJPAStateManager
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instructions.add(new MethodInsnNode(Opcodes.INVOKEINTERFACE,
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Type.getInternalName(OpenJPAStateManager.class),
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"getMetaData",
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Type.getMethodDescriptor(Type.getType(ClassMetaData.class))));
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instructions.add(AsmHelper.getLoadConstantInsn(fmds[i].getIndex()));
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instructions.add(new MethodInsnNode(Opcodes.INVOKEVIRTUAL,
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Type.getInternalName(ClassMetaData.class),
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"getField",
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Type.getMethodDescriptor(Type.getType(FieldMetaData.class), Type.INT_TYPE)));
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instructions.add(new MethodInsnNode(Opcodes.INVOKEINTERFACE,
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Type.getInternalName(FetchConfiguration.class),
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"requiresFetch",
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Type.getMethodDescriptor(Type.INT_TYPE, Type.getType(FieldMetaData.class))));
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instructions.add(AsmHelper.getLoadConstantInsn(FetchConfiguration.FETCH_NONE));
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instructions.add(new JumpInsnNode(Opcodes.IF_ICMPEQ, lblEndIf));
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addLoad(classNode, instructions, fmds[i], objectCount, localVarPos, false);
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if (replaceType(fmds[i]) >= JavaTypes.OBJECT) {
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objectCount++;
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}
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}
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setTarget(code.vreturn(), jumps);
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code.calculateMaxStack();
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code.calculateMaxLocals();
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if (lblEndIf != null) {
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instructions.add(lblEndIf);
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}
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instructions.add(new InsnNode(Opcodes.RETURN));
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}
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private void addLoadWithFieldsMethod(BCClass bc, ClassMetaData meta) {
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@ -754,114 +781,148 @@ public class PCDataGenerator extends DynamicStorageGenerator {
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/**
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* Declare and start the base load method.
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*/
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private Code addLoadMethod(BCClass bc, boolean fields) {
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Class<?>[] args = null;
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if (fields)
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args = new Class[]{ OpenJPAStateManager.class, BitSet.class,
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FetchConfiguration.class, Object.class };
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else
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args = new Class[]{ OpenJPAStateManager.class,
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FetchConfiguration.class, Object.class };
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BCMethod load = bc.declareMethod("load", void.class, args);
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Code code = load.getCode(true);
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private MethodNode addLoadMethod(ClassNodeTracker cnt, boolean fields) {
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String mDesc;
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if (fields) {
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mDesc = Type.getMethodDescriptor(Type.VOID_TYPE,
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Type.getType(OpenJPAStateManager.class),
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Type.getType(BitSet.class),
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Type.getType(FetchConfiguration.class),
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AsmHelper.TYPE_OBJECT);
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}
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else {
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mDesc = Type.getMethodDescriptor(Type.VOID_TYPE,
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Type.getType(OpenJPAStateManager.class),
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Type.getType(FetchConfiguration.class),
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AsmHelper.TYPE_OBJECT);
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}
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MethodNode meth = new MethodNode(Opcodes.ACC_PUBLIC,
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"load",
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mDesc,
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null, null);
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cnt.getClassNode().methods.add(meth);
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//loadVersion(sm);
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code.aload().setThis();
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code.aload().setParam(0);
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code.invokevirtual().setMethod("loadVersion", void.class,
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new Class[]{ OpenJPAStateManager.class });
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// loadVersion(sm);
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meth.instructions.add(new VarInsnNode(Opcodes.ALOAD, 0)); // this
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meth.instructions.add(new VarInsnNode(Opcodes.ALOAD, 1)); // OpenJPAStateManager
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meth.instructions.add(new MethodInsnNode(Opcodes.INVOKEVIRTUAL,
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cnt.getClassNode().name,
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"loadVersion",
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Type.getMethodDescriptor(Type.VOID_TYPE, Type.getType(OpenJPAStateManager.class))));
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//loadImplData(sm);
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code.aload().setThis();
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code.aload().setParam(0);
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code.invokevirtual().setMethod("loadImplData", void.class,
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new Class[]{ OpenJPAStateManager.class });
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return code;
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meth.instructions.add(new VarInsnNode(Opcodes.ALOAD, 0)); // this
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meth.instructions.add(new VarInsnNode(Opcodes.ALOAD, 1)); // OpenJPAStateManager
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meth.instructions.add(new MethodInsnNode(Opcodes.INVOKEVIRTUAL,
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cnt.getClassNode().name,
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"loadImplData",
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Type.getMethodDescriptor(Type.VOID_TYPE, Type.getType(OpenJPAStateManager.class))));
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return meth;
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}
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/**
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* Add the field load.
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*/
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private Instruction addLoad(BCClass bc, Code code, FieldMetaData fmd,
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int objectCount, int local, boolean fields) {
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private void addLoad(ClassNode classNode, InsnList instructions, FieldMetaData fmd,
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int objectCount, int localVarPos, boolean fields) {
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int index = fmd.getIndex();
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int typeCode = replaceType(fmd);
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Instruction first;
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if (typeCode < JavaTypes.OBJECT) {
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// sm.store<type>(i, field<i>)
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Class<?> type = forType(fmd.getTypeCode());
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first = code.aload().setParam(0);
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code.constant().setValue(index);
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code.aload().setThis();
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code.getfield().setField(getFieldName(index), type);
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code.invokeinterface().setMethod(OpenJPAStateManager.class,
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"store" + StringUtil.capitalize(type.getName()),
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void.class, new Class[]{ int.class, type });
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} else {
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instructions.add(new VarInsnNode(Opcodes.ALOAD, 1)); // 1st param
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instructions.add(AsmHelper.getLoadConstantInsn(index));
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instructions.add(new VarInsnNode(Opcodes.ALOAD, 0)); // this
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instructions.add(new FieldInsnNode(Opcodes.GETFIELD, classNode.name, getFieldName(index), Type.getDescriptor(type)));
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instructions.add(new MethodInsnNode(Opcodes.INVOKEINTERFACE,
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Type.getInternalName(OpenJPAStateManager.class),
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"store" + StringUtil.capitalize(type.getName()),
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Type.getMethodDescriptor(Type.VOID_TYPE, Type.INT_TYPE, Type.getType(type))));
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}
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else {
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// fmd = sm.getMetaData().getField(i);
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int offset = fields ? 1 : 0;
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first = code.aload().setParam(0);
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code.invokeinterface().setMethod(OpenJPAStateManager.class,
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"getMetaData", ClassMetaData.class, null);
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code.constant().setValue(fmd.getIndex());
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code.invokevirtual().setMethod(ClassMetaData.class, "getField",
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FieldMetaData.class, new Class[]{ int.class });
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code.astore().setLocal(local);
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instructions.add(new VarInsnNode(Opcodes.ALOAD, 1)); // 1st param
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instructions.add(new MethodInsnNode(Opcodes.INVOKEINTERFACE,
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Type.getInternalName(OpenJPAStateManager.class),
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"getMetaData",
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Type.getMethodDescriptor(Type.getType(ClassMetaData.class))));
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instructions.add(AsmHelper.getLoadConstantInsn(index));
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instructions.add(new MethodInsnNode(Opcodes.INVOKEVIRTUAL,
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Type.getInternalName(ClassMetaData.class),
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"getField",
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Type.getMethodDescriptor(Type.getType(FieldMetaData.class), Type.INT_TYPE)));
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instructions.add(new VarInsnNode(Opcodes.ASTORE, localVarPos));
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// sm.storeField(i, toField(sm, fmd, objects[objectCount],
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// fetch, context);
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code.aload().setParam(0);
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code.constant().setValue(index);
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code.aload().setThis();
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code.aload().setParam(0);
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code.aload().setLocal(local);
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code.aload().setThis();
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code.getfield().setField("objects", Object[].class);
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code.constant().setValue(objectCount);
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code.aaload();
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code.aload().setParam(1 + offset);
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code.aload().setParam(2 + offset);
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code.invokevirtual().setMethod(bc.getName(), "toField",
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Object.class.getName(), toStrings(new Class[]{
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OpenJPAStateManager.class, FieldMetaData.class,
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Object.class, FetchConfiguration.class, Object.class }));
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code.invokeinterface().setMethod(OpenJPAStateManager.class,
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"storeField", void.class,
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new Class[]{ int.class, Object.class });
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instructions.add(new VarInsnNode(Opcodes.ALOAD, 1)); // 1st param
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instructions.add(AsmHelper.getLoadConstantInsn(index));
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instructions.add(new VarInsnNode(Opcodes.ALOAD, 0)); // this
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instructions.add(new VarInsnNode(Opcodes.ALOAD, 1)); // 1st param
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instructions.add(new VarInsnNode(Opcodes.ALOAD, localVarPos));
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instructions.add(new VarInsnNode(Opcodes.ALOAD, 0)); // this
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instructions.add(new FieldInsnNode(Opcodes.GETFIELD, classNode.name, "objects", Type.getDescriptor(Object[].class)));
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instructions.add(AsmHelper.getLoadConstantInsn(objectCount));
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instructions.add(new InsnNode(Opcodes.AALOAD));
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instructions.add(new VarInsnNode(Opcodes.ALOAD, 2+offset));
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instructions.add(new VarInsnNode(Opcodes.ALOAD, 3+offset));
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instructions.add(new MethodInsnNode(Opcodes.INVOKEVIRTUAL,
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classNode.name,
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"toField",
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Type.getMethodDescriptor(AsmHelper.TYPE_OBJECT,
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Type.getType(OpenJPAStateManager.class),
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Type.getType(FieldMetaData.class),
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AsmHelper.TYPE_OBJECT,
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Type.getType(FetchConfiguration.class),
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AsmHelper.TYPE_OBJECT)));
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instructions.add(new MethodInsnNode(Opcodes.INVOKEINTERFACE,
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Type.getInternalName(OpenJPAStateManager.class),
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"storeField",
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Type.getMethodDescriptor(Type.VOID_TYPE, Type.INT_TYPE, AsmHelper.TYPE_OBJECT)));
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}
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return first;
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}
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/**
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* Load intermediate data if possible.
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*/
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private Instruction addLoadIntermediate(Code code, int index,
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int objectCount, Collection<Instruction> jumps2, int inter) {
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private void addLoadIntermediate(ClassNode classNode, InsnList instructions, int index, int objectCount, int interVarPos) {
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// {
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// Object inter = objects[objectCount];
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Instruction first = code.aload().setThis();
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code.getfield().setField("objects", Object[].class);
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code.constant().setValue(objectCount);
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code.aaload();
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code.astore().setLocal(inter);
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// if (inter != null && !sm.getLoaded().get(index))
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code.aload().setLocal(inter);
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jumps2.add(code.ifnull());
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code.aload().setParam(0);
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code.invokeinterface().setMethod(OpenJPAStateManager.class,
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"getLoaded", BitSet.class, null);
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code.constant().setValue(index);
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code.invokevirtual().setMethod(BitSet.class, "get",
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boolean.class, new Class[]{ int.class });
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jumps2.add(code.ifne());
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// Object inter = objects[objectCount];
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instructions.add(new VarInsnNode(Opcodes.ALOAD, 0)); // this
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instructions.add(new FieldInsnNode(Opcodes.GETFIELD, classNode.name, "objects", Type.getDescriptor(Object[].class)));
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instructions.add(AsmHelper.getLoadConstantInsn(objectCount));
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instructions.add(new InsnNode(Opcodes.AALOAD));
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instructions.add(new VarInsnNode(Opcodes.ASTORE, interVarPos));
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// if (inter != null && !sm.getLoaded().get(index))
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LabelNode lblEndIf = new LabelNode();
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instructions.add(new VarInsnNode(Opcodes.ALOAD, interVarPos));
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instructions.add(new JumpInsnNode(Opcodes.IFNULL, lblEndIf));
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instructions.add(new VarInsnNode(Opcodes.ALOAD, 1)); // 1st param
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instructions.add(new MethodInsnNode(Opcodes.INVOKEINTERFACE,
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Type.getInternalName(OpenJPAStateManager.class),
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"getLoaded",
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Type.getMethodDescriptor(Type.getType(BitSet.class))));
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instructions.add(AsmHelper.getLoadConstantInsn(index));
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instructions.add(new MethodInsnNode(Opcodes.INVOKEVIRTUAL,
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Type.getInternalName(BitSet.class),
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"get",
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Type.getMethodDescriptor(Type.BOOLEAN_TYPE, Type.INT_TYPE)));
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instructions.add(new JumpInsnNode(Opcodes.IFNE, lblEndIf));
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// sm.setIntermediate(index, inter);
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// } // end else
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code.aload().setParam(0);
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code.constant().setValue(index);
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code.aload().setLocal(inter);
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code.invokeinterface().setMethod(OpenJPAStateManager.class,
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"setIntermediate", void.class,
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new Class[]{ int.class, Object.class });
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return first;
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instructions.add(new VarInsnNode(Opcodes.ALOAD, 1)); // 1st Param
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instructions.add(AsmHelper.getLoadConstantInsn(index));
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instructions.add(new VarInsnNode(Opcodes.ALOAD, interVarPos));
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instructions.add(new MethodInsnNode(Opcodes.INVOKEINTERFACE,
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Type.getInternalName(OpenJPAStateManager.class),
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"setIntermediate",
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Type.getMethodDescriptor(Type.VOID_TYPE, Type.INT_TYPE, AsmHelper.TYPE_OBJECT)));
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// } // end if - done with lblEndIf
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instructions.add(lblEndIf);
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}
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private void addStoreMethods(BCClass bc, ClassMetaData meta) {
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@ -1149,6 +1210,123 @@ public class PCDataGenerator extends DynamicStorageGenerator {
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return strings;
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}
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/**
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* Declare and start the base load method.
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*/
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@Deprecated
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private Code addLoadMethod(BCClass bc, boolean fields) {
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Class<?>[] args = null;
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if (fields)
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args = new Class[]{ OpenJPAStateManager.class, BitSet.class,
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FetchConfiguration.class, Object.class };
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else
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args = new Class[]{ OpenJPAStateManager.class,
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FetchConfiguration.class, Object.class };
|
||||
BCMethod load = bc.declareMethod("load", void.class, args);
|
||||
Code code = load.getCode(true);
|
||||
|
||||
//loadVersion(sm);
|
||||
code.aload().setThis();
|
||||
code.aload().setParam(0);
|
||||
code.invokevirtual().setMethod("loadVersion", void.class,
|
||||
new Class[]{ OpenJPAStateManager.class });
|
||||
|
||||
//loadImplData(sm);
|
||||
code.aload().setThis();
|
||||
code.aload().setParam(0);
|
||||
code.invokevirtual().setMethod("loadImplData", void.class,
|
||||
new Class[]{ OpenJPAStateManager.class });
|
||||
return code;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Add the field load.
|
||||
*/
|
||||
private Instruction addLoad(BCClass bc, Code code, FieldMetaData fmd,
|
||||
int objectCount, int local, boolean fields) {
|
||||
int index = fmd.getIndex();
|
||||
int typeCode = replaceType(fmd);
|
||||
Instruction first;
|
||||
if (typeCode < JavaTypes.OBJECT) {
|
||||
// sm.store<type>(i, field<i>)
|
||||
Class<?> type = forType(fmd.getTypeCode());
|
||||
first = code.aload().setParam(0);
|
||||
code.constant().setValue(index);
|
||||
code.aload().setThis();
|
||||
code.getfield().setField(getFieldName(index), type);
|
||||
code.invokeinterface().setMethod(OpenJPAStateManager.class,
|
||||
"store" + StringUtil.capitalize(type.getName()),
|
||||
void.class, new Class[]{ int.class, type });
|
||||
} else {
|
||||
// fmd = sm.getMetaData().getField(i);
|
||||
int offset = fields ? 1 : 0;
|
||||
first = code.aload().setParam(0);
|
||||
code.invokeinterface().setMethod(OpenJPAStateManager.class,
|
||||
"getMetaData", ClassMetaData.class, null);
|
||||
code.constant().setValue(fmd.getIndex());
|
||||
code.invokevirtual().setMethod(ClassMetaData.class, "getField",
|
||||
FieldMetaData.class, new Class[]{ int.class });
|
||||
code.astore().setLocal(local);
|
||||
// sm.storeField(i, toField(sm, fmd, objects[objectCount],
|
||||
// fetch, context);
|
||||
code.aload().setParam(0);
|
||||
code.constant().setValue(index);
|
||||
code.aload().setThis();
|
||||
code.aload().setParam(0);
|
||||
code.aload().setLocal(local);
|
||||
code.aload().setThis();
|
||||
code.getfield().setField("objects", Object[].class);
|
||||
code.constant().setValue(objectCount);
|
||||
code.aaload();
|
||||
code.aload().setParam(1 + offset);
|
||||
code.aload().setParam(2 + offset);
|
||||
code.invokevirtual().setMethod(bc.getName(), "toField",
|
||||
Object.class.getName(), toStrings(new Class[]{
|
||||
OpenJPAStateManager.class, FieldMetaData.class,
|
||||
Object.class, FetchConfiguration.class, Object.class }));
|
||||
code.invokeinterface().setMethod(OpenJPAStateManager.class,
|
||||
"storeField", void.class,
|
||||
new Class[]{ int.class, Object.class });
|
||||
}
|
||||
return first;
|
||||
}
|
||||
|
||||
/**
|
||||
* Load intermediate data if possible.
|
||||
*/
|
||||
@Deprecated
|
||||
private Instruction addLoadIntermediate(Code code, int index,
|
||||
int objectCount, Collection<Instruction> jumps2, int inter) {
|
||||
// {
|
||||
// Object inter = objects[objectCount];
|
||||
Instruction first = code.aload().setThis();
|
||||
code.getfield().setField("objects", Object[].class);
|
||||
code.constant().setValue(objectCount);
|
||||
code.aaload();
|
||||
code.astore().setLocal(inter);
|
||||
// if (inter != null && !sm.getLoaded().get(index))
|
||||
code.aload().setLocal(inter);
|
||||
jumps2.add(code.ifnull());
|
||||
code.aload().setParam(0);
|
||||
code.invokeinterface().setMethod(OpenJPAStateManager.class,
|
||||
"getLoaded", BitSet.class, null);
|
||||
code.constant().setValue(index);
|
||||
code.invokevirtual().setMethod(BitSet.class, "get",
|
||||
boolean.class, new Class[]{ int.class });
|
||||
jumps2.add(code.ifne());
|
||||
// sm.setIntermediate(index, inter);
|
||||
// } // end else
|
||||
code.aload().setParam(0);
|
||||
code.constant().setValue(index);
|
||||
code.aload().setLocal(inter);
|
||||
code.invokeinterface().setMethod(OpenJPAStateManager.class,
|
||||
"setIntermediate", void.class,
|
||||
new Class[]{ int.class, Object.class });
|
||||
return first;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Dynamic {@link PCData}s generated will implement this interface
|
||||
* to simplify initialization.
|
||||
|
|
|
|||
|
|
@ -728,7 +728,7 @@ public final class AsmHelper {
|
|||
// stack position 0 is this pointer for non-static methods
|
||||
// In other words: for a static method the first free stack location is 1,
|
||||
// for non-static it is 2
|
||||
int pos = ((meth.access & Opcodes.ACC_STATIC) > 0) ? 1 : 2;
|
||||
int pos = ((meth.access & Opcodes.ACC_STATIC) > 0) ? 0 : 1;
|
||||
|
||||
// and now add the size of the parameters
|
||||
for (Type paramType : paramTypes) {
|
||||
|
|
|
|||
Loading…
Reference in New Issue