| /* |
| * 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.api.ldap.model.schema.syntaxCheckers; |
| |
| |
| import org.apache.directory.api.ldap.model.constants.SchemaConstants; |
| import org.apache.directory.api.ldap.model.schema.SyntaxChecker; |
| import org.apache.directory.api.util.Chars; |
| import org.apache.directory.api.util.Strings; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| |
| /** |
| * A SyntaxChecker which verifies that a value is a valid Java primitive short or |
| * the Short wrapper. Essentially this constrains the min and max values of |
| * the Integer. |
| * |
| * From RFC 4517 : |
| * |
| * Integer = ( HYPHEN LDIGIT *DIGIT ) | number |
| * |
| * From RFC 4512 : |
| * number = DIGIT | ( LDIGIT 1*DIGIT ) |
| * DIGIT = %x30 | LDIGIT ; "0"-"9" |
| * LDIGIT = %x31-39 ; "1"-"9" |
| * HYPHEN = %x2D ; hyphen ("-") |
| * |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| @SuppressWarnings("serial") |
| public class JavaByteSyntaxChecker extends SyntaxChecker |
| { |
| /** A logger for this class */ |
| private static final Logger LOG = LoggerFactory.getLogger( JavaByteSyntaxChecker.class ); |
| |
| |
| /** |
| * Creates a new instance of JavaByteSyntaxChecker. |
| */ |
| public JavaByteSyntaxChecker() |
| { |
| super( SchemaConstants.JAVA_BYTE_SYNTAX ); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public boolean isValidSyntax( Object value ) |
| { |
| String strValue = null; |
| |
| if ( value == null ) |
| { |
| LOG.debug( "Syntax invalid for 'null'" ); |
| return false; |
| } |
| |
| if ( value instanceof String ) |
| { |
| strValue = ( String ) value; |
| } |
| else if ( value instanceof byte[] ) |
| { |
| strValue = Strings.utf8ToString( ( byte[] ) value ); |
| } |
| else |
| { |
| strValue = value.toString(); |
| } |
| |
| if ( strValue.length() == 0 ) |
| { |
| LOG.debug( "Syntax invalid for '{}'", value ); |
| return false; |
| } |
| |
| // The first char must be either a '-' or in [0..9]. |
| // If it's a '0', then there should be any other char after |
| int pos = 0; |
| char c = strValue.charAt( pos ); |
| |
| if ( c == '-' ) |
| { |
| pos = 1; |
| } |
| else if ( !Chars.isDigit( c ) ) |
| { |
| LOG.debug( "Syntax invalid for '{}'", value ); |
| return false; |
| } |
| else if ( c == '0' ) |
| { |
| if ( strValue.length() > 1 ) |
| { |
| LOG.debug( "Syntax invalid for '{}'", value ); |
| return false; |
| } |
| else |
| { |
| LOG.debug( "Syntax valid for '{}'", value ); |
| return true; |
| } |
| } |
| |
| // We must have at least a digit which is not '0' |
| if ( !Chars.isDigit( strValue, pos ) ) |
| { |
| LOG.debug( "Syntax invalid for '{}'", value ); |
| return false; |
| } |
| else if ( Strings.isCharASCII( strValue, pos, '0' ) ) |
| { |
| LOG.debug( "Syntax invalid for '{}'", value ); |
| return false; |
| } |
| else |
| { |
| pos++; |
| } |
| |
| while ( Chars.isDigit( strValue, pos ) ) |
| { |
| pos++; |
| } |
| |
| if ( pos != strValue.length() ) |
| { |
| LOG.debug( "Syntax invalid for '{}'", value ); |
| return false; |
| } |
| |
| // Should get a NumberFormatException for Byte values out of range |
| try |
| { |
| Byte.valueOf( strValue ); |
| LOG.debug( "Syntax valid for '{}'", value ); |
| return true; |
| } |
| catch ( NumberFormatException e ) |
| { |
| LOG.debug( "Syntax invalid for '{}'", value ); |
| return false; |
| } |
| } |
| } |