| /* |
| * 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 |
| * |
| * https://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.api.ldap.model.schema.comparators; |
| |
| |
| import java.io.Serializable; |
| import java.math.BigInteger; |
| |
| import org.apache.directory.api.i18n.I18n; |
| import org.apache.directory.api.ldap.model.entry.Value; |
| import org.apache.directory.api.ldap.model.exception.LdapException; |
| import org.apache.directory.api.ldap.model.schema.LdapComparator; |
| import org.apache.directory.api.ldap.model.schema.normalizers.NumericNormalizer; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| /** |
| * A class for the integerOrderingMatch matchingRule (RFC 4517, par. 4.2.20) |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class IntegerComparator extends LdapComparator<Object> implements Serializable |
| { |
| /** The serial version UID */ |
| private static final long serialVersionUID = 2L; |
| |
| /** A logger for this class */ |
| private static final Logger LOG = LoggerFactory.getLogger( IntegerComparator.class ); |
| |
| |
| /** |
| * The IntegerComparator constructor. Its OID is the IntegerOrderingMatch matching |
| * rule OID. |
| * |
| * @param oid The Comparator's OID |
| */ |
| public IntegerComparator( String oid ) |
| { |
| super( oid ); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public int compare( Object v1, Object v2 ) |
| { |
| // The value can be a String, a Value or a Long |
| if ( v1 == null ) |
| { |
| if ( v2 == null ) |
| { |
| return 0; |
| } |
| else |
| { |
| return -1; |
| } |
| } |
| else if ( v2 == null ) |
| { |
| return 1; |
| } |
| |
| if ( v1 instanceof String ) |
| { |
| return compare( ( String ) v1, ( String ) v2 ); |
| } |
| else if ( v1 instanceof Value ) |
| { |
| return compare( ( ( Value ) v1 ).getString(), ( ( Value ) v2 ).getString() ); |
| } |
| else |
| { |
| return Long.compare( ( Long ) v1, ( Long ) v2 ); |
| } |
| } |
| |
| |
| /** |
| * Implementation of the Compare method |
| * |
| * @param backendValue The stored value |
| * @param assertValue The provided value |
| * @return <tt>0</tt> if the values are equal, <tt>-1</tt> if the provided value is below |
| * the stored value, <tt>+1</tt> otherwise |
| */ |
| private int compare( String backendValue, String assertValue ) |
| { |
| if ( LOG.isDebugEnabled() ) |
| { |
| LOG.debug( I18n.msg( I18n.MSG_13746_COMPARING_INTEGER, backendValue, assertValue ) ); |
| } |
| |
| // First, shortcut the process by comparing |
| // references. If they are equals, then o1 and o2 |
| // reference the same object |
| if ( backendValue == assertValue ) |
| { |
| return 0; |
| } |
| |
| // Then, deal with one of o1 or o2 being null |
| // Both can't be null, because then they would |
| // have been caught by the previous test |
| if ( ( backendValue == null ) || ( assertValue == null ) ) |
| { |
| return backendValue == null ? -1 : 1; |
| } |
| |
| // Both objects must be stored as String for numeric. |
| // But we need to normalize the values first. |
| NumericNormalizer normalizer = new NumericNormalizer(); |
| |
| try |
| { |
| backendValue = normalizer.normalize( backendValue ); |
| } |
| catch ( LdapException le ) |
| { |
| throw new IllegalArgumentException( I18n.err( I18n.ERR_13724_INVALID_VALUE, backendValue ), le ); |
| } |
| try |
| { |
| assertValue = normalizer.normalize( assertValue ); |
| } |
| catch ( LdapException le ) |
| { |
| throw new IllegalArgumentException( I18n.err( I18n.ERR_13724_INVALID_VALUE, assertValue ), le ); |
| } |
| |
| try |
| { |
| // First try with longs |
| Long l1 = Long.valueOf( backendValue ); |
| Long l2 = Long.valueOf( assertValue ); |
| |
| return l1.compareTo( l2 ); |
| } |
| catch ( NumberFormatException nfe ) |
| { |
| // Ok, try with BigIntegers |
| BigInteger b1 = new BigInteger( backendValue ); |
| BigInteger b2 = new BigInteger( assertValue ); |
| |
| return b1.compareTo( b2 ); |
| } |
| } |
| } |