/*
* Copyright 2009 Fred Sauer
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.allen_sauer.gwt.log.rebind;
import com.google.gwt.core.ext.BadPropertyValueException;
import com.google.gwt.core.ext.ConfigurationProperty;
import com.google.gwt.core.ext.Generator;
import com.google.gwt.core.ext.GeneratorContext;
import com.google.gwt.core.ext.PropertyOracle;
import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.core.ext.typeinfo.JClassType;
import com.google.gwt.core.ext.typeinfo.NotFoundException;
import com.google.gwt.core.ext.typeinfo.TypeOracle;
import com.google.gwt.user.rebind.ClassSourceFileComposerFactory;
import com.google.gwt.user.rebind.SourceWriter;
import java.io.PrintWriter;
import java.util.List;
/**
* Generator for {@link com.allen_sauer.gwt.log.client.RemoteLoggerConfig}.
*/
public class RemoteLoggerConfigGenerator extends Generator {
// CHECKSTYLE_JAVADOC_OFF
private static final String PROPERTY_LOG_URL = "log_url";
@Override
public String generate(TreeLogger logger, GeneratorContext context, String typeName)
throws UnableToCompleteException {
TypeOracle typeOracle = context.getTypeOracle();
JClassType userType;
try {
userType = typeOracle.getType(typeName);
} catch (NotFoundException e) {
logger.log(TreeLogger.ERROR, "OOPS", e);
throw new UnableToCompleteException();
}
String packageName = userType.getPackage().getName();
String className = userType.getName();
JClassType remoteService = typeOracle.findType(typeName);
if (remoteService == null) {
logger.log(TreeLogger.ERROR, "Unable to find metadata for type '" + typeName + "'", null);
throw new UnableToCompleteException();
}
if (remoteService.isInterface() == null) {
logger.log(TreeLogger.ERROR, remoteService.getQualifiedSourceName() + " is not an interface",
null);
throw new UnableToCompleteException();
}
ClassSourceFileComposerFactory composerFactory = new ClassSourceFileComposerFactory(
packageName, className + "Impl");
composerFactory.addImplementedInterface(remoteService.getQualifiedSourceName());
PrintWriter pw = context.tryCreate(logger, packageName, className + "Impl");
if (pw != null) {
SourceWriter sw = composerFactory.createSourceWriter(context, pw);
PropertyOracle propertyOracle = context.getPropertyOracle();
String logUrl;
try {
ConfigurationProperty logPatternProperty = propertyOracle.getConfigurationProperty(PROPERTY_LOG_URL);
List<String> values = logPatternProperty.getValues();
logUrl = values.get(0);
} catch (BadPropertyValueException e) {
logger.log(TreeLogger.ERROR, "Unable to find value for '" + PROPERTY_LOG_URL + "'", e);
throw new UnableToCompleteException();
}
sw.println();
sw.println("public String serviceEntryPointUrl() {");
sw.indent();
if (logUrl == null) {
sw.println("return null;");
} else {
sw.println("return \"" + logUrl.trim() + "\";");
}
sw.outdent();
sw.println("}");
sw.commit(logger);
}
return composerFactory.getCreatedClassName();
}
}