ActiveMQ example source code file (CSharpClassesGenerator.java)

This example ActiveMQ source code file (CSharpClassesGenerator.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - ActiveMQ tags/keywords

equals, exception, io, iterator, jproperty, license, license, printwriter, printwriter, see, string, string, stringwriter, stringwriter, util, you

The ActiveMQ CSharpClassesGenerator.java source code

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.activemq.openwire.tool;

import java.io.File;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.Iterator;
import java.util.List;

import org.codehaus.jam.JClass;
import org.codehaus.jam.JProperty;

/**
 * 
 */
public class CSharpClassesGenerator extends MultiSourceGenerator {

    protected String targetDir = "./src/main/csharp";

    public Object run() {
        filePostFix = ".cs";
        if (destDir == null) {
            destDir = new File(targetDir + "/ActiveMQ/Commands");
        }
        return super.run();
    }

    public String makeHashCodeBody() throws Exception {
        if (simpleName.endsWith("Id")) {
            StringWriter buffer = new StringWriter();
            PrintWriter out = new PrintWriter(buffer);
            out.println("            int answer = 0;");
            Iterator iter = getProperties().iterator();
            while (iter.hasNext()) {
                JProperty property = (JProperty)iter.next();
                out.println("            answer = (answer * 37) + HashCode(" + property.getSimpleName() + ");");
            }
            out.println("            return answer;");
            return buffer.toString();
        }
        return null;
    }

    public String makeEqualsBody() throws Exception {
        if (simpleName.endsWith("Id")) {
            StringWriter buffer = new StringWriter();
            PrintWriter out = new PrintWriter(buffer);

            Iterator iter = getProperties().iterator();
            while (iter.hasNext()) {
                JProperty property = (JProperty)iter.next();
                String name = property.getSimpleName();
                out.println("            if (! Equals(this." + name + ", that." + name + ")) return false;");
            }
            out.println("            return true;");
            return buffer.toString();
        }
        return null;
    }

    public String makeToStringBody() throws Exception {
        StringWriter buffer = new StringWriter();
        PrintWriter out = new PrintWriter(buffer);
        out.println("            return GetType().Name + \"[\"");
        Iterator iter = getProperties().iterator();
        while (iter.hasNext()) {
            JProperty property = (JProperty)iter.next();
            String name = property.getSimpleName();
            out.println("                + \" " + name + "=\" + " + name);
        }
        out.println("                + \" ]\";");
        return buffer.toString();
    }

    private void generateLicence(PrintWriter out) {
        out.println("/*");
        out.println(" * Licensed to the Apache Software Foundation (ASF) under one or more");
        out.println(" * contributor license agreements.  See the NOTICE file distributed with");
        out.println(" * this work for additional information regarding copyright ownership.");
        out.println(" * The ASF licenses this file to You under the Apache License, Version 2.0");
        out.println(" * (the \"License\"); you may not use this file except in compliance with");
        out.println(" * the License.  You may obtain a copy of the License at");
        out.println(" *");
        out.println(" * http://www.apache.org/licenses/LICENSE-2.0");
        out.println(" *");
        out.println(" * Unless required by applicable law or agreed to in writing, software");
        out.println(" * distributed under the License is distributed on an \"AS IS\" BASIS,");
        out.println(" * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.");
        out.println(" * See the License for the specific language governing permissions and");
        out.println(" * limitations under the License.");
        out.println(" */");
    }

    protected void generateFile(PrintWriter out) throws Exception {
        generateLicence(out);

        out.println("//");
        out.println("//  NOTE!: This file is autogenerated - do not modify!");
        out.println("//         if you need to make a change, please see the Groovy scripts in the");
        out.println("//         activemq-core module");
        out.println("//");
        out.println("");
        out.println("using System;");
        out.println("using System.Collections;");
        out.println("");
        out.println("using ActiveMQ.OpenWire;");
        out.println("using ActiveMQ.Commands;");
        out.println("");
        out.println("namespace ActiveMQ.Commands");
        out.println("{");
        out.println("    /// <summary>");
        out.println("    ///  The ActiveMQ " + jclass.getSimpleName() + " Command");
        out.println("    /// </summary>");
        out.print("    public class " + jclass.getSimpleName() + " : " + baseClass);

        for (int i = 0; i < jclass.getInterfaces().length; i++) {
            JClass intf = jclass.getInterfaces()[i];
            out.print(", " + intf.getSimpleName());
        }

        out.println("");
        out.println("    {");
        out.println("        public const byte ID_" + jclass.getSimpleName() + " = " + getOpenWireOpCode(jclass) + ";");
        out.println("                ");

        List properties = getProperties();
        String type;
        Object name;
        for (Iterator iter = properties.iterator(); iter.hasNext();) {
            JProperty property = (JProperty)iter.next();
            type = toCSharpType(property.getType());
            name = decapitalize(property.getSimpleName());
            out.println("        " + type + " " + name + ";");
        }

        String text = makeHashCodeBody();
        if (text != null) {
            out.println("");
            out.println("        public override int GetHashCode() {");
            out.println("" + text + "");
            out.println("        }");
        }

        text = makeEqualsBody();
        if (text != null) {
            out.println("");
            out.println("        public override bool Equals(object that) {");
            out.println("            if (that is " + className + ") {");
            out.println("                return Equals((" + className + ") that);");
            out.println("            }");
            out.println("            return false;");
            out.println("        }");
            out.println("");
            out.println("        public virtual bool Equals(" + className + " that) {");
            out.println("" + text + "");
            out.println("        }");
        }

        text = makeToStringBody();
        if (text != null) {
            out.println("");
            out.println("        public override string ToString() {");
            out.println("" + text + "");
            out.println("        }");
        }

        out.println("");
        out.println("        public override byte GetDataStructureType() {");
        out.println("            return ID_" + jclass.getSimpleName() + ";");
        out.println("        }");
        out.println("");
        out.println("");
        out.println("        // Properties");

        for (Iterator iter = properties.iterator(); iter.hasNext();) {
            JProperty property = (JProperty)iter.next();
            type = toCSharpType(property.getType());
            name = decapitalize(property.getSimpleName());
            String propertyName = property.getSimpleName();

            out.println("");
            out.println("        public " + type + " " + propertyName + "");
            out.println("        {");
            out.println("            get { return " + name + "; }");
            out.println("            set { this." + name + " = value; }            ");
            out.println("        }");
        }

        out.println("");
        out.println("    }");
        out.println("}");
    }

    public String getTargetDir() {
        return targetDir;
    }

    public void setTargetDir(String targetDir) {
        this.targetDir = targetDir;
    }
}