/*
* @(#)SearchControls.java 1.10 03/12/19
*
* Copyright 2004 Sun Microsystems, Inc. All rights reserved.
* SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*/
package javax.naming.directory;
/**
* This class encapsulates
* factors that determine scope of search and what gets returned
* as a result of the search.
*<p>
* A SearchControls instance is not synchronized against concurrent
* multithreaded access. Multiple threads trying to access and modify
* a single SearchControls instance should lock the object.
*
* @author Rosanna Lee
* @author Scott Seligman
* @version 1.10 03/12/19
* @since 1.3
*/
public class SearchControls implements java.io.Serializable {
/**
* Search the named object.
*<p>
* The NamingEnumeration that results from search()
* using OBJECT_SCOPE will contain one or zero element.
* The enumeration contains one element if the named object satisfies
* the search filter specified in search().
* The element will have as its name the empty string because the names
* of elements in the NamingEnumeration are relative to the
* target context--in this case, the target context is the named object.
* It contains zero element if the named object does not satisfy
* the search filter specified in search().
* <p>
* The value of this constant is <tt>0</tt>.
*/
public final static int OBJECT_SCOPE = 0;
/**
* Search one level of the named context.
*<p>
* The NamingEnumeration that results from search()
* using ONELEVEL_SCOPE contains elements with
* objects in the named context that satisfy
* the search filter specified in search().
* The names of elements in the NamingEnumeration are atomic names
* relative to the named context.
* <p>
* The value of this constant is <tt>1</tt>.
*/
public final static int ONELEVEL_SCOPE = 1;
/**
* Search the entire subtree rooted at the named object.
*<p>
* If the named object is not a DirContext, search only the object.
* If the named object is a DirContext, search the subtree
* rooted at the named object, including the named object itself.
*<p>
* The search will not cross naming system boundaries.
*<p>
* The NamingEnumeration that results from search()
* using SUBTREE_SCOPE contains elements of objects
* from the subtree (including the named context)
* that satisfy the search filter specified in search().
* The names of elements in the NamingEnumeration are either
* relative to the named context or is a URL string.
* If the named context satisfies the search filter, it is
* included in the enumeration with the empty string as
* its name.
* <p>
* The value of this constant is <tt>2</tt>.
*/
public final static int SUBTREE_SCOPE = 2;
/**
* Contains the scope with which to apply the search. One of
* <tt>ONELEVEL_SCOPE</tt>, <tt>OBJECT_SCOPE</tt>, or
* <tt>SUBTREE_SCOPE</tt>.
* @serial
*/
private int searchScope;
/**
* Contains the milliseconds to wait before returning
* from search.
* @serial
*/
private int timeLimit;
/**
* Indicates whether JNDI links are dereferenced during
* search.
* @serial
*/
private boolean derefLink;
/**
* Indicates whether object is returned in <tt>SearchResult</tt>.
* @serial
*/
private boolean returnObj;
/**
* Contains the maximum number of SearchResults to return.
* @serial
*/
private long countLimit;
/**
* Contains the list of attributes to be returned in
* <tt>SearchResult</tt> for each matching entry of search. <tt>null</tt>
* indicates that all attributes are to be returned.
* @serial
*/
private String[] attributesToReturn;
/**
* Constructs a search constraints using defaults.
*<p>
* The defaults are:
* <ul>
* <li>search one level
* <li>no maximum return limit for search results
* <li>no time limit for search
* <li>return all attributes associated with objects that satisfy
* the search filter.
* <li>do not return named object (return only name and class)
* <li>do not dereference links during search
*</ul>
*/
public SearchControls() {
searchScope = ONELEVEL_SCOPE;
timeLimit = 0; // no limit
countLimit = 0; // no limit
derefLink = false;
returnObj = false;
attributesToReturn = null; // return all
}
/**
* Constructs a search constraints using arguments.
* @param scope The search scope. One of:
* OBJECT_SCOPE, ONELEVEL_SCOPE, SUBTREE_SCOPE.
* @param timelim The number of milliseconds to wait before returning.
* If 0, wait indefinitely.
* @param deref If true, dereference links during search.
* @param countlim The maximum number of entries to return. If 0, return
* all entries that satisfy filter.
* @param retobj If true, return the object bound to the name of the
* entry; if false, do not return object.
* @param attrs The identifiers of the attributes to return along with
* the entry. If null, return all attributes. If empty
* return no attributes.
*/
public SearchControls(int scope,
long countlim,
int timelim,
String[] attrs,
boolean retobj,
boolean deref) {
searchScope = scope;
timeLimit = timelim; // no limit
derefLink = deref;
returnObj = retobj;
countLimit = countlim; // no limit
attributesToReturn = attrs; // return all
}
/**
* Retrieves the search scope of these SearchControls.
*<p>
* One of OBJECT_SCOPE, ONELEVEL_SCOPE, SUBTREE_SCOPE.
*
* @return The search scope of this SearchControls.
* @see #setSearchScope
*/
public int getSearchScope() {
return searchScope;
}
/**
* Retrieves the time limit of these SearchControls in milliseconds.
*<p>
* If the value is 0, this means to wait indefinitely.
* @return The time limit of these SearchControls in milliseconds.
* @see #setTimeLimit
*/
public int getTimeLimit() {
return timeLimit;
}
/**
* Determines whether links will be dereferenced during the search.
*
* @return true if links will be dereferenced; false otherwise.
* @see #setDerefLinkFlag
*/
public boolean getDerefLinkFlag() {
return derefLink;
}
/**
* Determines whether objects will be returned as part of the result.
*
* @return true if objects will be returned; false otherwise.
* @see #setReturningObjFlag
*/
public boolean getReturningObjFlag() {
return returnObj;
}
/**
* Retrieves the maximum number of entries that will be returned
* as a result of the search.
*<p>
* 0 indicates that all entries will be returned.
* @return The maximum number of entries that will be returned.
* @see #setCountLimit
*/
public long getCountLimit() {
return countLimit;
}
/**
* Retrieves the attributes that will be returned as part of the search.
*<p>
* A value of null indicates that all attributes will be returned.
* An empty array indicates that no attributes are to be returned.
*
* @return An array of attribute ids identifying the attributes that
* will be returned. Can be null.
* @see #setReturningAttributes
*/
public String[] getReturningAttributes() {
return attributesToReturn;
}
/**
* Sets the search scope to one of:
* OBJECT_SCOPE, ONELEVEL_SCOPE, SUBTREE_SCOPE.
* @param scope The search scope of this SearchControls.
* @see #getSearchScope
*/
public void setSearchScope(int scope) {
searchScope = scope;
}
/**
* Sets the time limit of these SearchControls in milliseconds.
*<p>
* If the value is 0, this means to wait indefinitely.
* @param ms The time limit of these SearchControls in milliseconds.
* @see #getTimeLimit
*/
public void setTimeLimit(int ms) {
timeLimit = ms;
}
/**
* Enables/disables link dereferencing during the search.
*
* @param on if true links will be dereferenced; if false, not followed.
* @see #getDerefLinkFlag
*/
public void setDerefLinkFlag(boolean on) {
derefLink = on;
}
/**
* Enables/disables returning objects returned as part of the result.
*<p>
* If disabled, only the name and class of the object is returned.
* If enabled, the object will be returned.
*
* @param on if true, objects will be returned; if false,
* objects will not be returned.
* @see #getReturningObjFlag
*/
public void setReturningObjFlag(boolean on) {
returnObj = on;
}
/**
* Sets the maximum number of entries to be returned
* as a result of the search.
*<p>
* 0 indicates no limit: all entries will be returned.
*
* @param limit The maximum number of entries that will be returned.
* @see #getCountLimit
*/
public void setCountLimit(long limit) {
countLimit = limit;
}
/**
* Specifies the attributes that will be returned as part of the search.
*<p>
* null indicates that all attributes will be returned.
* An empty array indicates no attributes are returned.
*
* @param attrs An array of attribute ids identifying the attributes that
* will be returned. Can be null.
* @see #getReturningAttributes
*/
public void setReturningAttributes(String[] attrs) {
attributesToReturn = attrs;
}
/**
* Use serialVersionUID from JNDI 1.1.1 for interoperability.
*/
private static final long serialVersionUID = -2480540967773454797L;
}
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