| /* |
| * 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.directory.shared.ldap.subtree; |
| |
| |
| import org.apache.directory.shared.ldap.filter.ExprNode; |
| import org.apache.directory.shared.ldap.name.DN; |
| |
| import java.util.Iterator; |
| import java.util.Set; |
| import java.util.Collections; |
| |
| |
| /** |
| * A simple implementation of the SubtreeSpecification interface. |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| * @version $Rev$ |
| */ |
| public class BaseSubtreeSpecification implements SubtreeSpecification |
| { |
| /** the subtree base relative to the administration point */ |
| private final DN base; |
| |
| /** the set of subordinates entries and their subordinates to exclude */ |
| private final Set<DN> chopBefore; |
| |
| /** the set of subordinates entries whose subordinates are to be excluded */ |
| private final Set<DN> chopAfter; |
| |
| /** the minimum distance below base to start including entries */ |
| private final int minBaseDistance; |
| |
| /** the maximum distance from base past which entries are excluded */ |
| private final int maxBaseDistance; |
| |
| /** |
| * a filter using only assertions on objectClass attributes for subtree |
| * refinement |
| */ |
| private final ExprNode refinement; |
| |
| |
| // ----------------------------------------------------------------------- |
| // C O N S T R U C T O R S |
| // ----------------------------------------------------------------------- |
| |
| /** |
| * Creates a simple subtree whose administrative point is necessarily the |
| * base and all subordinates underneath (excluding those that are part of |
| * inner areas) are part of the the subtree. |
| */ |
| @SuppressWarnings("unchecked") |
| public BaseSubtreeSpecification() |
| { |
| this.base = new DN(); |
| this.minBaseDistance = 0; |
| this.maxBaseDistance = UNBOUNDED_MAX; |
| this.chopAfter = Collections.EMPTY_SET; |
| this.chopBefore = Collections.EMPTY_SET; |
| this.refinement = null; |
| } |
| |
| |
| /** |
| * Creates a simple subtree refinement whose administrative point is |
| * necessarily the base and only those subordinates selected by the |
| * refinement filter are included. |
| * |
| * @param refinement |
| * the filter expression only composed of objectClass attribute |
| * value assertions |
| */ |
| @SuppressWarnings("unchecked") |
| public BaseSubtreeSpecification(ExprNode refinement) |
| { |
| this.base = new DN(); |
| this.minBaseDistance = 0; |
| this.maxBaseDistance = UNBOUNDED_MAX; |
| this.chopAfter = Collections.EMPTY_SET; |
| this.chopBefore = Collections.EMPTY_SET; |
| this.refinement = refinement; |
| } |
| |
| |
| /** |
| * Creates a simple subtree whose administrative point above the base and |
| * all subordinates underneath the base (excluding those that are part of |
| * inner areas) are part of the the subtree. |
| * |
| * @param base |
| * the base of the subtree relative to the administrative point |
| */ |
| @SuppressWarnings("unchecked") |
| public BaseSubtreeSpecification( DN base ) |
| { |
| this.base = base; |
| this.minBaseDistance = 0; |
| this.maxBaseDistance = UNBOUNDED_MAX; |
| this.chopAfter = Collections.EMPTY_SET; |
| this.chopBefore = Collections.EMPTY_SET; |
| this.refinement = null; |
| } |
| |
| |
| /** |
| * Creates a subtree without a refinement filter where all other aspects can |
| * be varied. |
| * |
| * @param base |
| * the base of the subtree relative to the administrative point |
| * @param minBaseDistance |
| * the minimum distance below base to start including entries |
| * @param maxBaseDistance |
| * the maximum distance from base past which entries are excluded |
| * @param chopAfter |
| * the set of subordinates entries whose subordinates are to be |
| * excluded |
| * @param chopBefore |
| * the set of subordinates entries and their subordinates to |
| * exclude |
| */ |
| public BaseSubtreeSpecification( DN base, int minBaseDistance, int maxBaseDistance, |
| Set<DN> chopAfter, Set<DN> chopBefore ) |
| { |
| this( base, minBaseDistance, maxBaseDistance, chopAfter, chopBefore, null ); |
| } |
| |
| |
| /** |
| * Creates a subtree which may be a refinement filter where all aspects of |
| * the specification can be set. If the refinement filter is null this |
| * defaults to {@link #BaseSubtreeSpecification(DN, int, int, Set, Set)}. |
| * |
| * @param base |
| * the base of the subtree relative to the administrative point |
| * @param minBaseDistance |
| * the minimum distance below base to start including entries |
| * @param maxBaseDistance |
| * the maximum distance from base past which entries are excluded |
| * @param chopAfter |
| * the set of subordinates entries whose subordinates are to be |
| * excluded |
| * @param chopBefore |
| * the set of subordinates entries and their subordinates to |
| * exclude |
| * @param refinement |
| * the filter expression only composed of objectClass attribute |
| * value assertions |
| */ |
| public BaseSubtreeSpecification( DN base, int minBaseDistance, int maxBaseDistance, |
| Set<DN> chopAfter, Set<DN> chopBefore, ExprNode refinement ) |
| { |
| this.base = base; |
| this.minBaseDistance = minBaseDistance; |
| |
| if ( maxBaseDistance < 0 ) |
| { |
| this.maxBaseDistance = UNBOUNDED_MAX; |
| } |
| else |
| { |
| this.maxBaseDistance = maxBaseDistance; |
| } |
| |
| this.chopAfter = chopAfter; |
| this.chopBefore = chopBefore; |
| this.refinement = refinement; |
| } |
| |
| |
| // ----------------------------------------------------------------------- |
| // A C C E S S O R S |
| // ----------------------------------------------------------------------- |
| |
| |
| public DN getBase() |
| { |
| return this.base; |
| } |
| |
| |
| public Set<DN> getChopBeforeExclusions() |
| { |
| return this.chopBefore; |
| } |
| |
| |
| public Set<DN> getChopAfterExclusions() |
| { |
| return this.chopAfter; |
| } |
| |
| |
| public int getMinBaseDistance() |
| { |
| return this.minBaseDistance; |
| } |
| |
| |
| public int getMaxBaseDistance() |
| { |
| return this.maxBaseDistance; |
| } |
| |
| |
| public ExprNode getRefinement() |
| { |
| return this.refinement; |
| } |
| |
| |
| /** |
| * Converts this item into its string representation as stored |
| * in directory. |
| * |
| * @param buffer the string buffer |
| */ |
| public void printToBuffer( StringBuilder buffer ) |
| { |
| buffer.append( '{' ); |
| |
| if(!base.isEmpty()) { |
| buffer.append( ' ' ); |
| buffer.append( "base" ); |
| buffer.append( ' ' ); |
| buffer.append( '"' ); |
| buffer.append( base.getName() ); |
| buffer.append( '"' ); |
| buffer.append( ',' ); |
| } |
| |
| if(minBaseDistance > 0) { |
| buffer.append( ' ' ); |
| buffer.append( "minimum" ); |
| buffer.append( ' ' ); |
| buffer.append( minBaseDistance ); |
| buffer.append( ',' ); |
| } |
| |
| if(maxBaseDistance > UNBOUNDED_MAX) { |
| buffer.append( ' ' ); |
| buffer.append( "maximum" ); |
| buffer.append( ' ' ); |
| buffer.append( maxBaseDistance ); |
| buffer.append( ',' ); |
| } |
| |
| if ( !chopBefore.isEmpty() || !chopAfter.isEmpty() ) |
| { |
| buffer.append( ' ' ); |
| buffer.append( "specificExclusions" ); |
| buffer.append( ' ' ); |
| buffer.append( '{' ); |
| |
| for ( Iterator<DN> it = chopBefore.iterator(); it.hasNext(); ) |
| { |
| DN dn = it.next(); |
| buffer.append( ' ' ); |
| buffer.append( "chopBefore" ); |
| buffer.append( ':' ); |
| buffer.append( ' ' ); |
| buffer.append( '"' ); |
| buffer.append( dn.getName() ); |
| buffer.append( '"' ); |
| |
| if(it.hasNext()) |
| { |
| buffer.append( ',' ); |
| buffer.append( ' ' ); |
| } |
| } |
| |
| if ( !chopBefore.isEmpty() && !chopAfter.isEmpty() ) |
| { |
| buffer.append( ',' ); |
| buffer.append( ' ' ); |
| } |
| |
| for ( Iterator<DN> it = chopAfter.iterator(); it.hasNext(); ) |
| { |
| DN dn = it.next(); |
| buffer.append( ' ' ); |
| buffer.append( "chopAfter" ); |
| buffer.append( ':' ); |
| buffer.append( ' ' ); |
| buffer.append( '"' ); |
| buffer.append( dn.getName() ); |
| buffer.append( '"' ); |
| |
| if(it.hasNext()) |
| { |
| buffer.append( ',' ); |
| buffer.append( ' ' ); |
| } |
| } |
| |
| buffer.append( ' ' ); |
| buffer.append( '}' ); |
| |
| buffer.append( ',' ); |
| } |
| |
| if ( refinement != null ) |
| { |
| buffer.append( ' ' ); |
| buffer.append( "specificationFilter" ); |
| buffer.append( ' ' ); |
| |
| // The ExprNode could represent both, a refinement |
| // or a filter. First we try to print the ExprNode |
| // as refinement. If that fails it is printed as |
| // LDAP filter. |
| try |
| { |
| // Must use a tempBuffer here because the |
| // exception could occur after some characters |
| // were added to the buffer. |
| StringBuilder tempBuffer = new StringBuilder(); |
| refinement.printRefinementToBuffer( tempBuffer ); |
| buffer.append( tempBuffer ); |
| } |
| catch ( UnsupportedOperationException e ) |
| { |
| buffer.append( refinement.toString() ); |
| } |
| |
| buffer.append( ',' ); |
| } |
| |
| if(buffer.charAt( buffer.length()-1 ) == ',') { |
| buffer.deleteCharAt( buffer.length()-1 ); |
| } |
| |
| buffer.append( ' ' ); |
| buffer.append( '}' ); |
| } |
| |
| |
| } |