JString.java

/**
 * 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.commoncrawl.rpc.compiler;

import java.io.IOException;

import org.commoncrawl.rpc.compiler.JCompType.CCompType;
import org.commoncrawl.rpc.compiler.JCompType.CppCompType;

/**
 */
public class JString extends JCompType {
    
  class JavaString extends JavaCompType {
    
    JavaString() {
      super("TextBytes", "TextBytes", "TextBytes");
    }

    @Override
    void genJSON(CodeBuffer cb, String fname) throws IOException {
      cb.append("writer.name(\""+fname+"\").value("+fname+".toString());\n");
    }    
    
    @Override
    void genClone(CodeBuffer cb,String type,String targetField, String sourceField) {
        cb.append(targetField+ "= new TextBytes("+sourceField+");\n");
    }    
    
    @Override
    void genClearMethod(CodeBuffer cb, String fname) { 
  	  	//TODO: IS THIS THE MOST EFFICIENT WAY TO CLEAR A STRING 
    	cb.append(fname+".clear();\n");
    }
    @Override 
    void genDecl(CodeBuffer cb, String fname) {
        cb.append("private "+getType()+" "+fname+"=  new TextBytes();\n");
    }    
    
    @Override
    boolean isIntrinsicType() {
      return false;
    }
    
    

    @Override
    void genHashCode(CodeBuffer cb, String fname) {
    	cb.append("result = MurmurHash.hash("+fname+".getBytes()," +fname + ".getOffset()," + fname  +".getLength(),result);\n");
    }    
    
    @Override
    void genReadMethod(CodeBuffer cb, String fname, String tag, boolean decl) {
      if (decl) {
        cb.append(getType()+" "+fname+" = new TextBytes();\n");
      }
      cb.append("decoder.read"+getMethodSuffix()+"(input," +fname+ ");\n");
    }
    @Override
    void genSkipMethod(CodeBuffer cb) {
      cb.append("decoder.skipTextBytes(input);\n");
    }    
    
    @Override
    void genGetSet(CodeBuffer cb, String fname, boolean trackDirtyFields) {
      cb.append("public TextBytes get"+toCamelCase(fname)+"AsTextBytes() {\n");
      cb.append("return "+fname+";\n");
      cb.append("}\n");

    	cb.append("public String get"+toCamelCase(fname)+"() {\n");
      cb.append("return "+fname+".toString();\n");
      cb.append("}\n");
      cb.append("public void set"+toCamelCase(fname)+"( String " +fname+") {\n");
      if (trackDirtyFields) { 
        cb.append("__validFields.set(Field_"+fname.toUpperCase()+");\n");
      }
      cb.append("this."+fname +".set(" + fname+");\n");
      cb.append("}\n");    }
  }
  
  /** Creates a new instance of JString */
  public JString() {
    setJavaType(new JavaString());
    setCppType(new CppCompType(" ::std::string"));
    setCType(new CCompType());
  }
    
  String getSignature() {
    return "s";
  }

  boolean isComparable() { 
	  return true;
  }
}