use of jodd.asm5.MethodVisitor in project tomee by apache.
the class Cmp2Generator method createEjbPassivate.
public void createEjbPassivate() {
final MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "ejbPassivate", "()V", null, null);
mv.visitCode();
mv.visitInsn(RETURN);
mv.visitMaxs(0, 1);
mv.visitEnd();
}
use of jodd.asm5.MethodVisitor in project tomee by apache.
the class Cmp2Generator method createSimplePrimaryKeyGetter.
/**
* Create a simple internal method for obtaining the
* primary key. There are 2 possibilities for handling
* the primary key here:
* <p/>
* 1) There is a defined primary key field. The
* contents of that field are returned.
* <p/>
* 2) The primary key is provided by the container.
* This is a long value stored in a private, generated
* field. This field is returned as a generated
* wrappered Long.
* <p/>
* 3) A primary key class has been provided. An instance
* of this class is instantiated, and code is generated
* that will copy all of the CMP fields from the EJB
* into the primary key instance.
*/
private void createSimplePrimaryKeyGetter() {
final MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "OpenEJB_getPrimaryKey", "()Ljava/lang/Object;", null, null);
mv.visitCode();
// the primary key is identifed as a field. We just return that value directly.
if (pkField != null) {
// push the pk field
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, implClassName, pkField.getName(), pkField.getDescriptor());
// return the pk field (from the stack)
mv.visitInsn(pkField.getType().getOpcode(IRETURN));
} else if (Object.class.equals(primKeyClass)) {
// this is a container-generated primary key. It's a long value stored in
// a generated field. We return that value, wrappered in a Long instance.
// push the pk field
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, implClassName, UNKNOWN_PK_NAME, UNKNOWN_PK_TYPE.getDescriptor());
// return the pk field (from the stack)
mv.visitInsn(UNKNOWN_PK_TYPE.getOpcode(IRETURN));
} else {
// We have a primary key class defined. For every field that matches one of the
// defined CMP fields, we generate code to copy that value into the corresponding
// field of the primary key class.
final String pkImplName = primKeyClass.getName().replace('.', '/');
// new Pk();
mv.visitTypeInsn(NEW, pkImplName);
mv.visitInsn(DUP);
mv.visitMethodInsn(INVOKESPECIAL, pkImplName, "<init>", "()V", false);
mv.visitVarInsn(ASTORE, 1);
mv.visitVarInsn(ALOAD, 1);
// copy each field from the ejb to the pk class
for (final Field field : primKeyClass.getFields()) {
final CmpField cmpField = cmpFields.get(field.getName());
// only process the cmp fields
if (cmpField == null) {
continue;
}
// check again since generated code is so hard to debug
if (!cmpField.getType().getClassName().equals(field.getType().getName())) {
throw new IllegalArgumentException("Primary key " + cmpField.getName() + " is type " + cmpField.getType().getClassName() + " but CMP field is type " + field.getType().getName());
}
// push the value from the cmp bean
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, implClassName, cmpField.getName(), cmpField.getDescriptor());
// set matching field in the pk class to the value on the stack
mv.visitFieldInsn(PUTFIELD, pkImplName, cmpField.getName(), cmpField.getDescriptor());
mv.visitVarInsn(ALOAD, 1);
}
// return the Pk();
mv.visitInsn(ARETURN);
}
mv.visitMaxs(0, 0);
mv.visitEnd();
}
use of jodd.asm5.MethodVisitor in project tomee by apache.
the class Cmp2Generator method createSetEntityContext.
public void createSetEntityContext() {
final MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "setEntityContext", "(Ljavax/ejb/EntityContext;)V", null, null);
mv.visitCode();
mv.visitInsn(RETURN);
mv.visitMaxs(0, 2);
mv.visitEnd();
}
use of jodd.asm5.MethodVisitor in project tomee by apache.
the class Cmp2Generator method createSetter.
/**
* Generate a concrete setter field for a CMP field.
* At this point, we're just generating a simple
* accessor for the field, given the type. The
* JPA engine when it makes this implementation class
* a managed class define whatever additional logic
* might be required.
*
* @param cmpField The CMP field backing this setter method.
*/
private void createSetter(final CmpField cmpField) {
final String methodName = setterName(cmpField.getName());
final MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, methodName, "(" + cmpField.getDescriptor() + ")V", null, null);
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitVarInsn(cmpField.getType().getOpcode(ILOAD), 1);
mv.visitFieldInsn(PUTFIELD, implClassName, cmpField.getName(), cmpField.getDescriptor());
mv.visitInsn(RETURN);
mv.visitMaxs(0, 0);
mv.visitEnd();
}
use of jodd.asm5.MethodVisitor in project tomee by apache.
the class MakeTxLookup method createNewHibernateStrategy.
private static void createNewHibernateStrategy(final File basedir, final String target, final String abstractJtaPlatformPackage) throws Exception {
final ClassWriter cw = new ClassWriter(0);
MethodVisitor mv;
cw.visit(V1_6, ACC_PUBLIC + ACC_SUPER, target.replace('.', '/'), null, abstractJtaPlatformPackage + "/AbstractJtaPlatform", null);
{
mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKESPECIAL, abstractJtaPlatformPackage + "/AbstractJtaPlatform", "<init>", "()V", false);
mv.visitInsn(RETURN);
mv.visitMaxs(1, 1);
mv.visitEnd();
}
{
mv = cw.visitMethod(ACC_PROTECTED, "locateTransactionManager", "()Ljavax/transaction/TransactionManager;", null, null);
mv.visitCode();
mv.visitMethodInsn(INVOKESTATIC, "org/apache/openejb/OpenEJB", "getTransactionManager", "()Ljavax/transaction/TransactionManager;", false);
mv.visitInsn(ARETURN);
mv.visitMaxs(1, 1);
mv.visitEnd();
}
{
mv = cw.visitMethod(ACC_PROTECTED, "locateUserTransaction", "()Ljavax/transaction/UserTransaction;", null, null);
mv.visitCode();
final Label l0 = new Label();
final Label l1 = new Label();
final Label l2 = new Label();
mv.visitTryCatchBlock(l0, l1, l2, "javax/naming/NamingException");
mv.visitLabel(l0);
mv.visitMethodInsn(INVOKESTATIC, "org/apache/openejb/loader/SystemInstance", "get", "()Lorg/apache/openejb/loader/SystemInstance;", false);
mv.visitLdcInsn(Type.getType("Lorg/apache/openejb/spi/ContainerSystem;"));
mv.visitMethodInsn(INVOKEVIRTUAL, "org/apache/openejb/loader/SystemInstance", "getComponent", "(Ljava/lang/Class;)Ljava/lang/Object;", false);
mv.visitTypeInsn(CHECKCAST, "org/apache/openejb/spi/ContainerSystem");
mv.visitMethodInsn(INVOKEINTERFACE, "org/apache/openejb/spi/ContainerSystem", "getJNDIContext", "()Ljavax/naming/Context;", true);
mv.visitLdcInsn("comp/UserTransaction");
mv.visitMethodInsn(INVOKEINTERFACE, "javax/naming/Context", "lookup", "(Ljava/lang/String;)Ljava/lang/Object;", true);
mv.visitTypeInsn(CHECKCAST, "javax/transaction/UserTransaction");
mv.visitLabel(l1);
mv.visitInsn(ARETURN);
mv.visitLabel(l2);
mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] { "javax/naming/NamingException" });
mv.visitVarInsn(ASTORE, 1);
mv.visitInsn(ACONST_NULL);
mv.visitInsn(ARETURN);
mv.visitMaxs(2, 2);
mv.visitEnd();
}
cw.visitEnd();
write(basedir, cw, target.replace('.', '/'));
}
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