| /* |
| * 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.syntaxCheckers; |
| |
| |
| import org.apache.directory.api.i18n.I18n; |
| import org.apache.directory.api.ldap.model.constants.SchemaConstants; |
| import org.apache.directory.api.ldap.model.schema.SyntaxChecker; |
| import org.apache.directory.api.util.Strings; |
| |
| |
| /** |
| * A SyntaxChecker which verifies that a value is a valid DerefAlias. We |
| * have four possible values : |
| * <ul> |
| * <li>NEVER</li> |
| * <li>SEARCHING</li> |
| * <li>FINDING</li> |
| * <li>ALWAYS</li> |
| * </ul> |
| * The value is case insensitive |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| @SuppressWarnings("serial") |
| public final class DerefAliasSyntaxChecker extends SyntaxChecker |
| { |
| /** |
| * A static instance of DerefAliasSyntaxChecker |
| */ |
| public static final DerefAliasSyntaxChecker INSTANCE = |
| new DerefAliasSyntaxChecker( SchemaConstants.DEREF_ALIAS_SYNTAX ); |
| |
| /** |
| * A static Builder for this class |
| */ |
| public static final class Builder extends SCBuilder<DerefAliasSyntaxChecker> |
| { |
| /** |
| * The Builder constructor |
| */ |
| private Builder() |
| { |
| super( SchemaConstants.DEREF_ALIAS_SYNTAX ); |
| } |
| |
| |
| /** |
| * Create a new instance of DerefAliasSyntaxChecker |
| * @return A new instance of DerefAliasSyntaxChecker |
| */ |
| @Override |
| public DerefAliasSyntaxChecker build() |
| { |
| return new DerefAliasSyntaxChecker( oid ); |
| } |
| } |
| |
| /** |
| * Creates a new instance of DerefAliasSyntaxChecker. |
| * |
| * @param oid The OID to use for this SyntaxChecker |
| */ |
| private DerefAliasSyntaxChecker( String oid ) |
| { |
| super( oid ); |
| } |
| |
| |
| /** |
| * @return An instance of the Builder for this class |
| */ |
| public static Builder builder() |
| { |
| return new Builder(); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public boolean isValidSyntax( Object value ) |
| { |
| String strValue; |
| |
| if ( value == null ) |
| { |
| if ( LOG.isDebugEnabled() ) |
| { |
| LOG.debug( I18n.err( I18n.ERR_13210_SYNTAX_INVALID, "null" ) ); |
| } |
| |
| return false; |
| } |
| |
| if ( value instanceof String ) |
| { |
| strValue = ( String ) value; |
| } |
| else if ( value instanceof byte[] ) |
| { |
| strValue = Strings.utf8ToString( ( byte[] ) value ); |
| } |
| else |
| { |
| strValue = value.toString(); |
| } |
| |
| strValue = Strings.trim( Strings.toLowerCaseAscii( strValue ) ); |
| |
| return "never".equals( strValue ) || "finding".equals( strValue ) || "searching".equals( strValue ) || "always" |
| .equals( strValue ); |
| } |
| } |