org.hibernate.envers.internal.tools.StringTools Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2013, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate.envers.internal.tools;
import java.util.Iterator;
/**
* @author Adam Warski (adam at warski dot org)
* @author Lukasz Zuchowski (author at zuchos dot com)
*/
public abstract class StringTools {
public static boolean isEmpty(String s) {
return s == null || "".equals(s);
}
public static boolean isEmpty(Object o) {
return o == null || "".equals(o);
}
/**
* @param s String, from which to get the last component.
* @return The last component of the dot-separated string s. For example, for a string
* "a.b.c", the result is "c".
*/
public static String getLastComponent(String s) {
if (s == null) {
return null;
}
final int lastDot = s.lastIndexOf(".");
if (lastDot == -1) {
return s;
} else {
return s.substring(lastDot + 1);
}
}
/**
* To the given string builder, appends all strings in the given iterator, separating them with the given
* separator. For example, for an interator "a" "b" "c" and separator ":" the output is "a:b:c".
*
* @param sb String builder, to which to append.
* @param contents Strings to be appended.
* @param separator Separator between subsequent content.
*/
public static void append(StringBuilder sb, Iterator contents, String separator) {
boolean isFirst = true;
while (contents.hasNext()) {
if (!isFirst) {
sb.append(separator);
}
sb.append(contents.next());
isFirst = false;
}
}
/**
* Capitalizes first letter of the string
* @param fieldName
* @return capitalized string
*/
public static String capitalizeFirst(String fieldName) {
return fieldName.substring(0, 1).toUpperCase() + fieldName.substring(1);
}
}