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/*******************************************************************************
* Copyright (c) 2005, 2006 committers of openArchitectureWare 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:
* committers of openArchitectureWare - initial API and implementation
*******************************************************************************/
package org.eclipse.xtend;
import java.io.BufferedOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.eclipse.emf.mwe.core.WorkflowContext;
import org.eclipse.emf.mwe.core.issues.Issues;
import org.eclipse.emf.mwe.core.monitor.ProgressMonitor;
import org.eclipse.emf.mwe.core.resources.ResourceLoaderFactory;
import org.eclipse.internal.xtend.util.ProfileCollector;
import org.eclipse.xtend.expression.AbstractExpressionsUsingWorkflowComponent;
import org.eclipse.xtend.expression.ExecutionContextImpl;
import org.eclipse.xtend.expression.ExpressionFacade;
import org.eclipse.xtend.expression.Resource;
import org.eclipse.xtend.expression.Variable;
public class XtendComponent extends AbstractExpressionsUsingWorkflowComponent {
private final Log log = LogFactory.getLog(getClass());
String extensionFile = null;
private List<String> extensionAdvices = new ArrayList<String>();
public void addExtensionAdvice(String extensionAdvices) {
if ( !this.extensionAdvices.contains(extensionAdvices) )
this.extensionAdvices.add( extensionAdvices );
}
/** Stores the value of the 'invoke' property. Needed for error analysis. */
private String invokeExpression;
private String expression = null;
private String collectProfileSummary = null;
private String verboseProfileFilename = null;
public void setCollectProfileSummary (String c) {
collectProfileSummary = c;
}
public void setVerboseProfileFilename (String f) {
verboseProfileFilename = f;
}
@Override
public String getLogMessage() {
return "executing '"+extensionFile+"'";
}
public void setInvoke(final String invoke) {
invokeExpression = invoke;
final int i = invoke.lastIndexOf("::");
if (i != -1) {
extensionFile = invoke.substring(0, i);
expression = invoke.substring(i + 2);
} else {
expression = invoke;
}
}
private String outputSlot = WorkflowContext.DEFAULT_SLOT;
public void setOutputSlot(final String outputSlot) {
this.outputSlot = outputSlot;
}
@Override
public void invokeInternal2(final WorkflowContext ctx, final ProgressMonitor monitor, final Issues issues) {
final InputStream in = getExtFileIS();
if (in == null) {
issues.addError("Cannot find extension file: "+extensionFile);
return;
}
OutputStream verboseProfileOutputStream = null;
if (verboseProfileFilename != null) {
try {
verboseProfileOutputStream = new BufferedOutputStream (new FileOutputStream (verboseProfileFilename));
ProfileCollector.getInstance().setDetailedLoggingWriter(verboseProfileOutputStream);
}
catch (IOException exc) {
log.warn("could not open profiling log file", exc);
}
}
ExecutionContextImpl ec = getExecutionContext(ctx);
for (String advice : extensionAdvices) {
final String[] allAdvices = advice.split(",");
for (int i = 0; i < allAdvices.length; i++) {
final String string = allAdvices[i];
ec.registerExtensionAdvices(string.trim());
}
}
ec = (ExecutionContextImpl) ec.cloneWithResource(new Resource() {
private String name = "noName";
public String getFullyQualifiedName() {
return name;
}
public void setFullyQualifiedName(final String fqn) {
name = fqn;
}
public String[] getImportedNamespaces() {
return new String[0];
}
public String[] getImportedExtensions() {
return new String[] { extensionFile };
}
});
final String[] slots = ctx.getSlotNames();
for (int i = 0; i < slots.length; i++) {
ec = (ExecutionContextImpl) ec.cloneWithVariable(new Variable(slots[i], ctx.get(slots[i])));
}
if (monitor!=null) {
ec.setMonitor(monitor);
}
final Object result = new ExpressionFacade(ec).evaluate(expression);
ctx.set(outputSlot, result);
ProfileCollector.getInstance().finish();
if ("true".equalsIgnoreCase(this.collectProfileSummary)) {
log.info ("profiling info: \n" + ProfileCollector.getInstance().toString());
}
if (verboseProfileOutputStream != null) {
try {
verboseProfileOutputStream.close ();
}
catch (IOException exc) {
log.warn("problem closing profile log file", exc);
}
}
}
private InputStream getExtFileIS() {
final InputStream in = ResourceLoaderFactory.createResourceLoader().getResourceAsStream(
extensionFile.replace("::", "/")+".ext");
return in;
}
@Override
public void checkConfiguration(final Issues issues) {
super.checkConfiguration(issues);
// Try to create detailed error message (see Bug#172567)
String compPrefix = getId()!=null ? getId()+": " : "";
if (invokeExpression==null || invokeExpression.trim().length()==0) {
issues.addError(compPrefix+"Property 'invoke' not specified.");
return;
}
if (extensionFile==null) {
issues.addError(compPrefix+"Error parsing property 'invoke': Could not extract name of the extension file.");
return;
}
if (getExtFileIS()==null || expression == null) {
issues.addError(compPrefix+"Property 'invoke' not specified properly. AbstractExtension file '"+extensionFile+"' not found.");
return;
}
if (expression==null) {
issues.addError(compPrefix+"Error parsing property 'invoke': Could not extract the expression to invoke in extension file '"+extensionFile+"'.");
return;
}
}
}
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