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/*******************************************************************************
* <copyright>
*
* Copyright (c) 2012 SAP AG and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Petya Sabeva - initial API, implementation and documentation
*
* </copyright>
*
*******************************************************************************/
package org.eclipse.jpt.jpadiagrameditor.ui.internal.command;
import java.util.Locale;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.graphiti.ui.editor.IDiagramContainerUI;
import org.eclipse.jdt.core.IField;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.IMethod;
import org.eclipse.jdt.core.IType;
import org.eclipse.jdt.core.JavaCore;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jpt.common.utility.command.Command;
import org.eclipse.jpt.jpa.core.context.PersistentType;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.JPADiagramEditorPlugin;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.provider.IJPAEditorFeatureProvider;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.util.JPAEditorUtil;
import org.eclipse.jpt.jpadiagrameditor.ui.internal.util.JpaArtifactFactory;
import org.eclipse.ui.IWorkbenchSite;
public class DeleteAttributeCommand implements Command {
private PersistentType jpt;
private String attributeName;
private IJPAEditorFeatureProvider fp;
public DeleteAttributeCommand(PersistentType jpt, String attributeName,
IJPAEditorFeatureProvider fp) {
super();
this.jpt = jpt;
this.attributeName = attributeName;
this.fp = fp;
}
public void execute() {
JpaArtifactFactory.instance().removeOrmPersistentAttribute(jpt, attributeName);
try {
IJavaProject jp = JavaCore.create(jpt.getJpaProject().getProject());
IType javaType = jp.findType(jpt.getName());
String attrNameWithCapitalLetter = attributeName.substring(0, 1)
.toUpperCase(Locale.ENGLISH) + attributeName.substring(1);
IMethod getAttributeMethod = findGetterMethod(javaType,
attrNameWithCapitalLetter);
String typeSignature = getReturnedType(getAttributeMethod);
deleteGetterMethod(typeSignature, getAttributeMethod);
deleteField(javaType);
deleteSetterMethod(javaType, attrNameWithCapitalLetter,
typeSignature);
IWorkbenchSite ws = ((IDiagramContainerUI) fp.getDiagramTypeProvider().getDiagramBehavior().getDiagramContainer()).getSite();
JPAEditorUtil.organizeImports(javaType.getCompilationUnit(), ws);
jpt.getJavaResourceType().getJavaResourceCompilationUnit().synchronizeWithJavaSource();
jpt.synchronizeWithResourceModel();
jpt.update();
} catch (JavaModelException e) {
JPADiagramEditorPlugin
.logError(
"Cannnot delete attribute with name " + attributeName, e); //$NON-NLS-1$
}
}
private String getReturnedType(IMethod getAttributeMethod)
throws JavaModelException {
String typeSignature = null;
if ((getAttributeMethod != null) && getAttributeMethod.exists()) {
typeSignature = getAttributeMethod.getReturnType();
}
return typeSignature;
}
private IMethod findGetterMethod(IType javaType,
String attrNameWithCapitalLetter) {
String getterPrefix = "get"; //$NON-NLS-1$
String methodName = getterPrefix + attrNameWithCapitalLetter;
IMethod getAttributeMethod = javaType.getMethod(methodName,
new String[0]);
if (!getAttributeMethod.exists()) {
getterPrefix = "is"; //$NON-NLS-1$
}
methodName = getterPrefix + attrNameWithCapitalLetter; //$NON-NLS-1$
getAttributeMethod = javaType.getMethod(methodName, new String[0]);
return getAttributeMethod;
}
private void deleteSetterMethod(IType javaType,
String attrNameWithCapitalLetter, String typeSignature)
throws JavaModelException {
String methodName = "set" + attrNameWithCapitalLetter; //$NON-NLS-1$
if(typeSignature != null) {
IMethod setAttributeMethod = javaType.getMethod(methodName,
new String[] { typeSignature });
if ((setAttributeMethod != null) && setAttributeMethod.exists())
setAttributeMethod.delete(true, new NullProgressMonitor());
}
}
private void deleteGetterMethod(String typeSignature, IMethod getAttributeMethod) throws JavaModelException {
if (getAttributeMethod != null && getAttributeMethod.exists()) {
getAttributeMethod.delete(true, new NullProgressMonitor());
}
}
private void deleteField(IType javaType) throws JavaModelException {
IField attributeField = javaType.getField(attributeName);
if (attributeField != null) {
if (!attributeField.exists()) {
attributeField = javaType.getField(JPAEditorUtil.revertFirstLetterCase(attributeName));
}
attributeField.delete(true, new NullProgressMonitor());
}
}
}
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