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/*******************************************************************************
* Copyright (c) 2001, 2007 Oracle Corporation 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:
* Oracle Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jst.jsf.context.symbol.internal.impl;
import java.io.IOException;
import java.io.Reader;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.jdt.core.IMethod;
import org.eclipse.jdt.core.IType;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.ui.JavadocContentAccess;
import org.eclipse.jst.jsf.common.JSFCommonPlugin;
import org.eclipse.jst.jsf.common.util.JDTBeanIntrospector;
import org.eclipse.jst.jsf.common.util.JDTBeanProperty;
import org.eclipse.jst.jsf.common.util.TypeUtil;
import org.eclipse.jst.jsf.context.symbol.IBeanMethodSymbol;
import org.eclipse.jst.jsf.context.symbol.IBeanPropertySymbol;
/**
* Utility class for accessing jdt elements for jsf el symbols
*/
public class JavaUtil {
private JavaUtil() {
// utility class
}
/**
* @param method
* @return the javadoc text for the given method. Will return null if no javadoc is found
*/
public static String getMethodJavadoc(final IMethod method) {
try {
final Reader contentReader = JavadocContentAccess.getHTMLContentReader(method, true, true);
if (contentReader != null) {
return read(contentReader);
}
} catch (final JavaModelException e) {
JSFCommonPlugin.log(IStatus.WARNING, "error reading javadoc for method '" + method.getElementName() + "'.", e); //$NON-NLS-1$ //$NON-NLS-2$
}
return null;
}
private static String read(final Reader rd) {
final StringBuffer buffer= new StringBuffer();
final char[] readBuffer= new char[2048];
try {
int n= rd.read(readBuffer);
while (n > 0) {
buffer.append(readBuffer, 0, n);
n= rd.read(readBuffer);
}
return buffer.toString();
} catch (final IOException x) {
// should not happen, but otherwise simply ignore
}
return null;
}
/**
* @param symbol - the method symbol to look for
* @return the IMethod for the given method symbol. Will return <code>null</code>, if none is found.
*/
public static IMethod findCorrespondingMethod(final IBeanMethodSymbol symbol) {
final IType type = symbol.getOwner().getType();
final JDTBeanIntrospector introspector = new JDTBeanIntrospector(type);
final IMethod[] methods = introspector.getAllMethods();
for (final IMethod method : methods) {
if (method.getElementName().equals(symbol.getName())) {
try {
final String currentMethodsSignature = TypeUtil.resolveMethodSignature(method.getDeclaringType(),
method.getSignature());
if (currentMethodsSignature.equals(symbol.getSignature())) {
return method;
}
} catch (final JavaModelException e) {
JSFCommonPlugin.log(IStatus.WARNING, "error determining for method '" //$NON-NLS-1$
+ method.getElementName() + "'.", e); //$NON-NLS-1$
}
}
}
return null;
}
/**
* @param propertySymbol - the property symbol to look for
* @return a JDTBeanProperty for the given property symbol
*/
public static JDTBeanProperty findCorrespondingJDTProperty(final IBeanPropertySymbol propertySymbol) {
final JDTBeanIntrospector introspector = new JDTBeanIntrospector(propertySymbol.getOwner().getType());
return introspector.getProperties().get(propertySymbol.getName());
}
}
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