src/java.naming/share/classes/javax/naming/directory/SearchControls.java
changeset 47216 71c04702a3d5
parent 32029 a5538163e144
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.naming/share/classes/javax/naming/directory/SearchControls.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,336 @@
+/*
+ * Copyright (c) 1999, 2000, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code 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 General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+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
+  * @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 {@code 0}.
+     */
+    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 {@code 1}.
+     */
+    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 {@code 2}.
+     */
+    public final static int SUBTREE_SCOPE = 2;
+
+    /**
+     * Contains the scope with which to apply the search. One of
+     * {@code ONELEVEL_SCOPE}, {@code OBJECT_SCOPE}, or
+     * {@code SUBTREE_SCOPE}.
+     * @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 {@code SearchResult}.
+     * @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
+     * {@code SearchResult} for each matching entry of search. {@code null}
+     * 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;
+}