001: /*
002: * The Apache Software License, Version 1.1
003: *
004: *
005: * Copyright (c) 1999, 2000 The Apache Software Foundation. All rights
006: * reserved.
007: *
008: * Redistribution and use in source and binary forms, with or without
009: * modification, are permitted provided that the following conditions
010: * are met:
011: *
012: * 1. Redistributions of source code must retain the above copyright
013: * notice, this list of conditions and the following disclaimer.
014: *
015: * 2. Redistributions in binary form must reproduce the above copyright
016: * notice, this list of conditions and the following disclaimer in
017: * the documentation and/or other materials provided with the
018: * distribution.
019: *
020: * 3. The end-user documentation included with the redistribution,
021: * if any, must include the following acknowledgment:
022: * "This product includes software developed by the
023: * Apache Software Foundation (http://www.apache.org/)."
024: * Alternately, this acknowledgment may appear in the software itself,
025: * if and wherever such third-party acknowledgments normally appear.
026: *
027: * 4. The names "Xerces" and "Apache Software Foundation" must
028: * not be used to endorse or promote products derived from this
029: * software without prior written permission. For written
030: * permission, please contact apache@apache.org.
031: *
032: * 5. Products derived from this software may not be called "Apache",
033: * nor may "Apache" appear in their name, without prior written
034: * permission of the Apache Software Foundation.
035: *
036: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
037: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
038: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
039: * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
040: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
041: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
042: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
043: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
044: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
045: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
046: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
047: * SUCH DAMAGE.
048: * ====================================================================
049: *
050: * This software consists of voluntary contributions made by many
051: * individuals on behalf of the Apache Software Foundation and was
052: * originally based on software copyright (c) 1999, International
053: * Business Machines, Inc., http://www.apache.org. For more
054: * information on the Apache Software Foundation, please see
055: * <http://www.apache.org/>.
056: */
057:
058: package org.apache.xerces.validators.datatype;
059:
060: import java.util.Hashtable;
061: import java.util.Enumeration;
062: import java.util.Vector;
063: import org.apache.xerces.utils.XMLCharacterProperties;
064: import org.apache.xerces.utils.XMLMessages;
065: import org.apache.xerces.validators.schema.SchemaSymbols;
066:
067: /**
068: * DataTypeValidator defines the interface that data type validators must obey.
069: * These validators can be supplied by the application writer and may be useful as
070: * standalone code as well as plugins to the validator architecture.
071: * @author Jeffrey Rodriguez
072: * @author Mark Swinkles - List Validation refactoring
073: * @version $Id: IDDatatypeValidator.java,v 1.23 2001/06/20 15:09:03 sandygao Exp $
074: */
075: public class IDDatatypeValidator extends StringDatatypeValidator {
076: private static Object fNullValue = new Object();
077:
078: public IDDatatypeValidator() throws InvalidDatatypeFacetException {
079: this (null, null, false); // Native, No Facets defined, Restriction
080: }
081:
082: public IDDatatypeValidator(DatatypeValidator base,
083: Hashtable facets, boolean derivedByList)
084: throws InvalidDatatypeFacetException {
085:
086: // all facets are handled in StringDatatypeValidator
087: super (base, facets, derivedByList);
088:
089: // list types are handled by ListDatatypeValidator, we do nothing here.
090: if (derivedByList)
091: return;
092:
093: // the type is NAME by default
094: if (base != null)
095: setTokenType(((IDDatatypeValidator) base).fTokenType);
096: else
097: setTokenType(SPECIAL_TOKEN_IDNAME);
098: }
099:
100: /**
101: * return value of whiteSpace facet
102: */
103: public short getWSFacet() {
104: return COLLAPSE;
105: }
106:
107: /**
108: * Checks that "content" string is valid
109: * datatype.
110: * If invalid a Datatype validation exception is thrown.
111: *
112: * @param content A string containing the content to be validated
113: * @param state Generic Object state that can be use to pass
114: * Structures
115: * @return
116: * @exception throws InvalidDatatypeException if the content is
117: * invalid according to the rules for the validators
118: * @exception InvalidDatatypeValueException
119: * @see org.apache.xerces.validators.datatype.InvalidDatatypeValueException
120: */
121: public Object validate(String content, Object state)
122: throws InvalidDatatypeValueException {
123: // use StringDatatypeValidator to validate content against facets
124: super .validate(content, state);
125:
126: if (state != null) {
127: if (!addId(content, (Hashtable) state)) {
128: InvalidDatatypeValueException error = new InvalidDatatypeValueException(
129: "ID '" + content + "' has to be unique");
130: error.setMinorCode(XMLMessages.MSG_ID_NOT_UNIQUE);
131: error.setMajorCode(XMLMessages.VC_ID);
132: throw error;
133: }
134: }
135:
136: return null;
137: }
138:
139: /**
140: * Returns a copy of this object.
141: */
142: public Object clone() throws CloneNotSupportedException {
143: throw new CloneNotSupportedException(
144: "clone() is not supported in "
145: + this .getClass().getName());
146: }
147:
148: /** addId. */
149: private boolean addId(String content, Hashtable IDList) {
150: if (IDList.containsKey(content))
151: return false;
152:
153: try {
154: IDList.put(content, fNullValue);
155: } catch (OutOfMemoryError ex) {
156: System.out.println("Out of Memory: Hashtable of ID's has "
157: + IDList.size() + " Elements");
158: ex.printStackTrace();
159: }
160: return true;
161: } // addId(int):boolean
162: }
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