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Cayenne Object Persistence Framework
/*****************************************************************
* 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.cayenne.gen;
import org.apache.cayenne.project.validator.MappingNamesHelper;
import org.apache.cayenne.util.NameConverter;
/**
* Methods for mangling strings.
*
* @author Mike Kienenberger
*/
public class StringUtils {
private static StringUtils sharedInstance = null;
public static StringUtils getInstance()
{
if (null == sharedInstance)
{
sharedInstance = new StringUtils();
}
return sharedInstance;
}
public StringUtils()
{
super();
}
/**
* Prepends underscore to variable name if necessary to remove conflict with reserved keywords.
*/
public String formatVariableName(String variableName) {
if (MappingNamesHelper.getInstance().isReservedJavaKeyword(variableName)) {
return "_" + variableName;
} else {
return variableName;
}
}
/**
* Removes package name, leaving base name.
*
* @since 1.2
*/
public String stripPackageName(String aString)
{
if (aString == null || aString.length() == 0)
return aString;
int lastDot = aString.lastIndexOf('.');
if ((-1 == lastDot) || ((aString.length() - 1) == lastDot) ) return aString;
return aString.substring(lastDot + 1);
}
/**
* Removes base name, leaving package name.
*
* @since 1.2
*/
public String stripClass(String aString)
{
if (aString == null || aString.length() == 0)
return aString;
int lastDot = aString.lastIndexOf('.');
if (-1 == lastDot) return "";
return aString.substring(0, lastDot);
}
/**
* Capitalizes the first letter of the property name.
*
* @since 1.1
*/
public String capitalized(String name) {
if (name == null || name.length() == 0)
return name;
char c = Character.toUpperCase(name.charAt(0));
return (name.length() == 1) ? Character.toString(c) : c + name.substring(1);
}
/**
* Returns string with lowercased first letter
*
* @since 1.2
*/
public static String uncapitalized(String aString)
{
if (aString == null || aString.length() == 0)
return aString;
char c = Character.toLowerCase(aString.charAt(0));
return (aString.length() == 1) ? Character.toString(c) : c + aString.substring(1);
}
/**
* Converts property name to Java constants naming convention.
*
* @since 1.1
*/
public String capitalizedAsConstant(String name) {
if (name == null || name.length() == 0)
return name;
return NameConverter.javaToUnderscored(name);
}
}
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