|
/*
* Copyright (c) 1995 - 2008 Sun Microsystems, Inc. All 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 Sun Microsystems 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.
*/
import java.util.Hashtable;
import javax.naming.Context;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import javax.naming.SizeLimitExceededException;
import javax.naming.directory.DirContext;
import javax.naming.directory.InitialDirContext;
import javax.naming.directory.SearchControls;
import javax.naming.directory.SearchResult;
/**
* Demonstrates how to perform a search and limit the number of results
* returned.
*
* usage: java SearchCountLimit
*/
class SearchCountLimit {
static int expected = 1;
public static void printSearchEnumeration(NamingEnumeration srhEnum) {
int count = 0;
try {
while (srhEnum.hasMore()) {
SearchResult sr = (SearchResult) srhEnum.next();
System.out.println(">>>" + sr.getName());
++count;
}
System.out.println("number of answers: " + count);
} catch (SizeLimitExceededException e) {
if (count == expected)
System.out.println("number of answers: " + count);
else
e.printStackTrace();
} catch (NamingException e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
// Set up the environment for creating the initial context
Hashtable<String, Object> env = new Hashtable<String, Object>(11);
env
.put(Context.INITIAL_CONTEXT_FACTORY,
"com.sun.jndi.ldap.LdapCtxFactory");
env.put(Context.PROVIDER_URL, "ldap://localhost:389/o=JNDITutorial");
try {
// Create initial context
DirContext ctx = new InitialDirContext(env);
// Set search controls to limit count to 'expected'
SearchControls ctls = new SearchControls();
ctls.setCountLimit(expected);
// Search for objects with those matching attributes
NamingEnumeration answer = ctx.search("ou=People", "(sn=M*)", ctls);
// Print the answer
printSearchEnumeration(answer);
// Close the context when we're done
ctx.close();
} catch (Exception e) {
System.err.println(e);
}
}
}
|