Examples with PropertyHandler org.mvel2.integration.PropertyHandler used on opensource projects

Example 1 with PropertyHandler

use of org.mvel2.integration.PropertyHandler in project mvel by mikebrock.

the class ASMAccessorOptimizer method _finishJIT.

private void _finishJIT() {
    if (deferFinish) {
        return;
    }
    if (returnType != null && returnType.isPrimitive()) {
        //noinspection unchecked
        wrapPrimitive(returnType);
    }
    if (returnType == void.class) {
        assert debug("ACONST_NULL");
        mv.visitInsn(ACONST_NULL);
    }
    assert debug("ARETURN");
    mv.visitInsn(ARETURN);
    assert debug("\n{METHOD STATS (maxstack=" + stacksize + ")}\n");
    // dump advanced debugging if necessary
    dumpAdvancedDebugging();
    mv.visitMaxs(stacksize, maxlocals);
    mv.visitEnd();
    mv = cw.visitMethod(ACC_PUBLIC, "getKnownEgressType", "()Ljava/lang/Class;", null, null);
    mv.visitCode();
    mv.visitLdcInsn(org.mvel2.asm.Type.getType(returnType != null ? returnType : Object.class));
    mv.visitInsn(ARETURN);
    mv.visitMaxs(1, 1);
    mv.visitEnd();
    if (propNull) {
        cw.visitField(ACC_PUBLIC, "nullPropertyHandler", "L" + NAMESPACE + "integration/PropertyHandler;", null, null).visitEnd();
    }
    if (methNull) {
        cw.visitField(ACC_PUBLIC, "nullMethodHandler", "L" + NAMESPACE + "integration/PropertyHandler;", null, null).visitEnd();
    }
    buildInputs();
    if (buildLog != null && buildLog.length() != 0 && expr != null) {
        mv = cw.visitMethod(ACC_PUBLIC, "toString", "()Ljava/lang/String;", null, null);
        mv.visitCode();
        Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLdcInsn(buildLog.toString() + "\n\n## { " + new String(expr) + " }");
        mv.visitInsn(ARETURN);
        Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }
    cw.visitEnd();
}

Example 2 with PropertyHandler

use of org.mvel2.integration.PropertyHandler in project mvel by mikebrock.

the class ASMAccessorOptimizer method writeOutNullHandler.

private void writeOutNullHandler(Member member, int type) {
    assert debug("DUP");
    mv.visitInsn(DUP);
    Label j = new Label();
    assert debug("IFNONNULL : jump");
    mv.visitJumpInsn(IFNONNULL, j);
    assert debug("POP");
    mv.visitInsn(POP);
    assert debug("ALOAD 0");
    mv.visitVarInsn(ALOAD, 0);
    if (type == 0) {
        this.propNull = true;
        assert debug("GETFIELD 'nullPropertyHandler'");
        mv.visitFieldInsn(GETFIELD, className, "nullPropertyHandler", "L" + NAMESPACE + "integration/PropertyHandler;");
    } else {
        this.methNull = true;
        assert debug("GETFIELD 'nullMethodHandler'");
        mv.visitFieldInsn(GETFIELD, className, "nullMethodHandler", "L" + NAMESPACE + "integration/PropertyHandler;");
    }
    assert debug("LDC '" + member.getName() + "'");
    mv.visitLdcInsn(member.getName());
    assert debug("ALOAD 1");
    mv.visitVarInsn(ALOAD, 1);
    assert debug("ALOAD 3");
    mv.visitVarInsn(ALOAD, 3);
    assert debug("INVOKEINTERFACE PropertyHandler.getProperty");
    mv.visitMethodInsn(INVOKEINTERFACE, NAMESPACE + "integration/PropertyHandler", "getProperty", "(Ljava/lang/String;Ljava/lang/Object;L" + NAMESPACE + "integration/VariableResolverFactory;)Ljava/lang/Object;");
    assert debug("LABEL:jump");
    mv.visitLabel(j);
}

Example 3 with PropertyHandler

use of org.mvel2.integration.PropertyHandler in project mvel by mikebrock.

the class ReflectiveAccessorOptimizer method propHandlerSet.

public void propHandlerSet(String property, Object ctx, Class handler, Object value) {
    PropertyHandler ph = getPropertyHandler(handler);
    addAccessorNode(new PropertyHandlerAccessor(property, handler, ph));
    ph.setProperty(property, ctx, variableFactory, value);
}

Example 4 with PropertyHandler

use of org.mvel2.integration.PropertyHandler in project mvel by mikebrock.

the class ReflectiveAccessorOptimizer method propHandler.

private Object propHandler(String property, Object ctx, Class handler) {
    PropertyHandler ph = getPropertyHandler(handler);
    addAccessorNode(new PropertyHandlerAccessor(property, handler, ph));
    return ph.getProperty(property, ctx, variableFactory);
}

Example 5 with PropertyHandler

use of org.mvel2.integration.PropertyHandler in project mvel by mikebrock.

the class PropertyHandlerTests method testNullPropertyHandler2.

public void testNullPropertyHandler2() {
    MVEL.COMPILER_OPT_ALLOW_OVERRIDE_ALL_PROPHANDLING = true;
    OptimizerFactory.setDefaultOptimizer("reflective");
    PropertyHandlerFactory.setNullPropertyHandler(new PropertyHandler() {

        public Object getProperty(String name, Object contextObj, VariableResolverFactory variableFactory) {
            return "NULL";
        }

        public Object setProperty(String name, Object contextObj, VariableResolverFactory variableFactory, Object value) {
            return "NULL";
        }
    });
    Foo foo = new Foo();
    Bar bar = foo.getBar();
    foo.setBar(null);
    Map map = new HashMap();
    map.put("foo", foo);
    Serializable s = MVEL.compileExpression("foo.bar");
    assertEquals("NULL", MVEL.executeExpression(s, map));
    assertEquals("NULL", MVEL.executeExpression(s, map));
    foo.setBar(bar);
    assertEquals(bar, MVEL.executeExpression(s, map));
}