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The Object Composition library merges multiple Java objects into a single multi-subject object.
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/*
* Copyright (c) 2008-2010, James Leigh and Zepheira LLC Some rights reserved.
* Copyright (c) 2011 Talis Inc., Some rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of the openrdf.org nor the names of its contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
package org.openrdf.repository.object.compiler.source;
import java.util.Map;
/**
* Java source code builder for a Java method.
*
* @author James Leigh
*
*/
public class JavaMethodBuilder extends JavaSourceBuilder {
private String methodName;
private boolean isInterface;
private boolean isStatic;
private boolean hasParameters;
private boolean isAbstract = true;
private boolean hasReturnType;
private boolean endParameter;
private boolean headerPrinted;
private boolean bodyPrinted;
private StringBuilder body = new StringBuilder();
public JavaMethodBuilder(String name, boolean isInterface,
boolean isStatic, boolean isAbstract, Map imports,
StringBuilder sb) {
this.methodName = name;
this.isInterface = isInterface;
this.isStatic = isStatic;
this.isAbstract = isAbstract;
setImports(imports);
setStringBuilder(sb);
setIndent("\t");
}
public JavaMethodBuilder returnType(String type) {
hasReturnType = true;
printHeader();
if (Void.class.getName().equals(type)) {
body.append("void").append(" ");
} else {
body.append(imports(type)).append(" ");
}
setIndent(getindent() + "\t");
return this;
}
public JavaMethodBuilder returnSetOf(String type) {
hasReturnType = true;
printHeader();
body.append(imports("java.util.Set"));
body.append("<").append(imports(type)).append("> ");
setIndent(getindent() + "\t");
return this;
}
public JavaMethodBuilder paramSetOf(String type, String name) {
if (hasParameters && endParameter) {
body.append(",\n");
} else if (!hasParameters) {
hasParameters = true;
printHeader();
body.append(methodName);
body.append("(\n");
}
body.append(getindent()).append(imports("java.util.Set"));
body.append("<").append(imports(type)).append("> ");
body.append(name);
endParameter = true;
return this;
}
public JavaMethodBuilder param(String type, String name) {
if (hasParameters && endParameter) {
body.append(",\n");
} else if (!hasParameters) {
hasParameters = true;
printHeader();
body.append(methodName);
body.append("(\n");
}
body.append(getindent()).append(imports(type)).append(" ").append(var(name));
endParameter = true;
return this;
}
public JavaMethodBuilder code(String code) {
if (code == null)
return this;
if (!bodyPrinted) {
if (!hasParameters) {
printHeader();
body.append(methodName);
body.append("(");
}
isAbstract = false;
bodyPrinted = true;
body.append(") {\n");
}
body.append(getindent()).append(code);
return this;
}
public void end() {
setIndent("\t");
printHeader();
sb.append(body);
if (!bodyPrinted) {
if (!hasParameters) {
printHeader();
sb.append(methodName);
sb.append("(");
}
sb.append(");\n\n");
} else {
sb.append("\n\t}\n\n");
}
}
@Override
protected void begin() {
if (endParameter) {
body.append(",\n");
endParameter = false;
} else if (hasReturnType && !hasParameters) {
hasParameters = true;
printHeader();
body.append(methodName);
body.append("(\n");
}
sb.append(body);
body.setLength(0);
}
private void printHeader() {
if (!headerPrinted) {
body.append("\t");
if (!isInterface) {
body.append("public ");
if (isStatic) {
body.append("static ");
}
if (isAbstract) {
body.append("abstract ");
}
}
headerPrinted = true;
}
}
}