| /* |
| * 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.model.entry; |
| |
| import java.io.IOException; |
| import java.io.ObjectInput; |
| import java.io.ObjectOutput; |
| |
| import org.apache.directory.shared.i18n.I18n; |
| import org.apache.directory.shared.ldap.model.exception.LdapException; |
| import org.apache.directory.shared.ldap.model.schema.MutableAttributeTypeImpl; |
| import org.apache.directory.shared.ldap.model.schema.SchemaManager; |
| import org.apache.directory.shared.util.Unicode; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * An internal implementation for a ModificationItem. The name has been |
| * chosen so that it does not conflict with @see ModificationItem |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class DefaultModification implements Modification |
| { |
| /** The modification operation */ |
| protected ModificationOperation operation; |
| |
| /** The attribute which contains the modification */ |
| protected EntryAttribute attribute; |
| |
| /** logger for reporting errors that might not be handled properly upstream */ |
| protected static final Logger LOG = LoggerFactory.getLogger( Modification.class ); |
| |
| /** |
| * Creates a new instance of DefaultModification. |
| * |
| * @param operation The modification operation |
| * @param attribute The asociated attribute |
| */ |
| public DefaultModification( ModificationOperation operation, EntryAttribute attribute ) |
| { |
| this.operation = operation; |
| this.attribute = attribute; |
| } |
| |
| |
| /** |
| * Creates a new instance of DefaultModification. |
| * |
| * @param schemaManager The schema manager |
| * @param modification The modification |
| */ |
| public DefaultModification( SchemaManager schemaManager, Modification modification ) |
| { |
| operation = modification.getOperation(); |
| |
| EntryAttribute modAttribute = modification.getAttribute(); |
| |
| try |
| { |
| MutableAttributeTypeImpl at = modAttribute.getAttributeType(); |
| |
| if ( at == null ) |
| { |
| at = schemaManager.lookupAttributeTypeRegistry( modAttribute.getId() ); |
| } |
| |
| attribute = new DefaultEntryAttribute( at, modAttribute ); |
| } |
| catch ( LdapException ne ) |
| { |
| // The attributeType is incorrect. Log, but do nothing otherwise. |
| LOG.error( I18n.err( I18n.ERR_04472, modAttribute.getId() ) ); |
| } |
| } |
| /** |
| * Creates a new instance of DefaultModification. |
| */ |
| public DefaultModification() |
| { |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public ModificationOperation getOperation() |
| { |
| return operation; |
| } |
| |
| |
| /** |
| * Store the modification operation |
| * |
| * @param operation The DirContext value to assign |
| */ |
| public void setOperation( int operation ) |
| { |
| this.operation = ModificationOperation.getOperation( operation ); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public void setOperation( ModificationOperation operation ) |
| { |
| this.operation = operation; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public EntryAttribute getAttribute() |
| { |
| return attribute; |
| } |
| |
| |
| /** |
| * Set the attribute's modification |
| * |
| * @param attribute The modified attribute |
| */ |
| public void setAttribute( EntryAttribute attribute ) |
| { |
| this.attribute = attribute; |
| } |
| |
| |
| /** |
| * @see Object#equals(Object) |
| * @return <code>true</code> if both values are equal |
| */ |
| public boolean equals( Object that ) |
| { |
| // Basic equals checks |
| if ( this == that ) |
| { |
| return true; |
| } |
| |
| if ( ! (that instanceof Modification ) ) |
| { |
| return false; |
| } |
| |
| Modification otherModification = (Modification)that; |
| |
| // Check the operation |
| if ( operation != otherModification.getOperation() ) |
| { |
| return false; |
| } |
| |
| // Check the attribute |
| if ( attribute == null ) |
| { |
| return otherModification.getAttribute() == null; |
| } |
| |
| return attribute.equals( otherModification.getAttribute() ); |
| } |
| |
| |
| /** |
| * Compute the modification @see Object#hashCode |
| * @return the instance's hash code |
| */ |
| public int hashCode() |
| { |
| int h = 37; |
| |
| h += h*17 + operation.getValue(); |
| h += h*17 + attribute.hashCode(); |
| |
| return h; |
| } |
| |
| |
| /** |
| * @see java.io.Externalizable#readExternal(ObjectInput) |
| */ |
| public void readExternal( ObjectInput in ) throws IOException, ClassNotFoundException |
| { |
| // Read the operation |
| int op = in.readInt(); |
| |
| operation = ModificationOperation.getOperation( op ); |
| |
| // Read the attribute |
| attribute = (EntryAttribute)in.readObject(); |
| } |
| |
| |
| /** |
| * @see java.io.Externalizable#writeExternal(ObjectOutput) |
| */ |
| public void writeExternal( ObjectOutput out ) throws IOException |
| { |
| // Write the operation |
| out.writeInt( operation.getValue() ); |
| |
| // Write the attribute |
| out.writeObject( attribute ); |
| |
| out.flush(); |
| } |
| |
| |
| /** |
| * Serialize a DefaultModification. |
| */ |
| public void serialize( ObjectOutput out ) throws IOException |
| { |
| if ( attribute == null ) |
| { |
| throw new IOException( I18n.err( I18n.ERR_04471 ) ); |
| } |
| |
| // Write the operation |
| out.writeInt( operation.getValue() ); |
| |
| MutableAttributeTypeImpl at = attribute.getAttributeType(); |
| |
| // Write the attribute's oid |
| Unicode.writeUTF(out, at.getOid()); |
| |
| // Write the attribute |
| ((DefaultEntryAttribute)attribute).serialize( out ); |
| } |
| |
| |
| /** |
| * Deserialize a ServerModification |
| * |
| * @param in The buffer containing the serialized value |
| * @param schemaManager The schema manager to use |
| * @throws IOException If we weren't able to deserialize the data |
| * @throws ClassNotFoundException if we weren't able to construct a Modification instance |
| * @throws LdapException If we didn't found the AttributeType in the registries |
| */ |
| public void deserialize( ObjectInput in, SchemaManager schemaManager ) throws IOException, ClassNotFoundException, LdapException |
| { |
| // Read the operation |
| int op = in.readInt(); |
| |
| operation = ModificationOperation.getOperation( op ); |
| |
| // Read the attribute OID |
| String oid = Unicode.readUTF(in); |
| |
| // Lookup for tha associated AttributeType |
| MutableAttributeTypeImpl attributeType = schemaManager.lookupAttributeTypeRegistry( oid ); |
| |
| attribute = new DefaultEntryAttribute( attributeType ); |
| |
| // Read the attribute |
| ((DefaultEntryAttribute)attribute).deserialize( in ); |
| } |
| |
| |
| /** |
| * Clone a modification |
| * |
| * @return a copied instance of the current modification |
| */ |
| public DefaultModification clone() |
| { |
| try |
| { |
| DefaultModification clone = (DefaultModification)super.clone(); |
| |
| clone.attribute = this.attribute.clone(); |
| return clone; |
| } |
| catch ( CloneNotSupportedException cnse ) |
| { |
| return null; |
| } |
| } |
| |
| |
| /** |
| * @see Object#toString() |
| */ |
| public String toString() |
| { |
| StringBuilder sb = new StringBuilder(); |
| |
| sb.append( "Modification: " ). |
| append( operation ). |
| append( "\n" ). |
| append( ", attribute : " ). |
| append( attribute ); |
| |
| return sb.toString(); |
| } |
| } |