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30 day Evaluation Version distributed via the Maven Jar Repository. Clover is not free. You have 30 days to evaluate it. Please visit http://www.thecortex.net/clover to obtain a licensed version of Clover | |||||||||||||||||||
Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
ProxyBuilder.java | 100% | 100% | 100% | 100% |
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// Copyright 2004 The Apache Software Foundation
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package org.apache.hivemind.impl;
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import java.lang.reflect.Modifier;
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import org.apache.hivemind.internal.Module;
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import org.apache.hivemind.internal.ServicePoint;
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import org.apache.hivemind.service.BodyBuilder;
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import org.apache.hivemind.service.ClassFab;
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import org.apache.hivemind.service.ClassFabUtils;
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import org.apache.hivemind.service.ClassFactory;
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import org.apache.hivemind.service.MethodIterator;
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import org.apache.hivemind.service.MethodSignature;
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/**
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* Class used to assist service extension points in creating proxies.
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*
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* @author Howard Lewis Ship
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*/
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public final class ProxyBuilder |
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{ |
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private ServicePoint _point;
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private Class _serviceInterface;
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private ClassFab _classFab;
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private String _type;
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/**
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* Constructs a new builder. The type will be incorporated
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* into the class name and the <code>toString()</code> method.
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* The service extension point is used to identify the service interface
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* and service id.
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*/
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public ProxyBuilder(String type, ServicePoint point)
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{ |
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_point = point; |
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_type = type; |
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_serviceInterface = point.getServiceInterface(); |
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Module module = point.getModule(); |
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ClassFactory factory = |
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(ClassFactory) module.getService("hivemind.ClassFactory", ClassFactory.class); |
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_classFab = |
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factory.newClass( |
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ClassFabUtils.generateClassName(type), |
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Object.class,
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module.getClassResolver().getClassLoader()); |
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_classFab.addInterface(_serviceInterface); |
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} |
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public ClassFab getClassFab()
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{ |
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return _classFab;
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} |
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/**
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* Creates the service methods for the class.
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* @param indirection the name of a variable, or a method invocation snippet,
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* used to redirect the invocation on the proxy to the actual service implementation.
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*/
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public void addServiceMethods(String indirection) |
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{ |
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BodyBuilder builder = new BodyBuilder();
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MethodIterator mi = new MethodIterator(_serviceInterface);
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while (mi.hasNext())
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{ |
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MethodSignature m = mi.next(); |
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builder.clear(); |
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builder.begin(); |
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builder.add("return ($r) ");
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builder.add(indirection); |
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builder.add(".");
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builder.add(m.getName()); |
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builder.addln("($$);");
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builder.end(); |
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_classFab.addMethod(Modifier.PUBLIC, m, builder.toString()); |
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} |
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if (!mi.getToString())
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ClassFabUtils.addToStringMethod( |
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_classFab, |
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"<"
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+ _type |
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+ " for "
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+ _point.getExtensionPointId() |
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+ "("
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+ _serviceInterface.getName() |
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+ ")>");
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} |
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} |
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