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Java example source code file (Base64BinaryDV.java)

This example Java source code file (Base64BinaryDV.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

base64binarydv, bytelistimpl, invaliddatatypevalueexception, object, string, typevalidator, validationcontext, xbase64

The Base64BinaryDV.java Java example source code

/*
 * reserved comment block
 * DO NOT REMOVE OR ALTER!
 */
/*
 * Copyright 2001, 2002,2004 The Apache Software Foundation.
 *
 * Licensed 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 com.sun.org.apache.xerces.internal.impl.dv.xs;

import com.sun.org.apache.xerces.internal.impl.dv.InvalidDatatypeValueException;
import com.sun.org.apache.xerces.internal.impl.dv.ValidationContext;
import com.sun.org.apache.xerces.internal.impl.dv.util.Base64;
import com.sun.org.apache.xerces.internal.impl.dv.util.ByteListImpl;

/**
 * Represent the schema type "base64Binary"
 *
 * @xerces.internal
 *
 * @author Neeraj Bajaj, Sun Microsystems, inc.
 * @author Sandy Gao, IBM
 *
 * @version $Id: Base64BinaryDV.java,v 1.7 2010-11-01 04:39:46 joehw Exp $
 */
public class Base64BinaryDV extends TypeValidator {

    public short getAllowedFacets(){
        return (XSSimpleTypeDecl.FACET_LENGTH | XSSimpleTypeDecl.FACET_MINLENGTH | XSSimpleTypeDecl.FACET_MAXLENGTH | XSSimpleTypeDecl.FACET_PATTERN | XSSimpleTypeDecl.FACET_ENUMERATION | XSSimpleTypeDecl.FACET_WHITESPACE );
    }

    public Object getActualValue(String content, ValidationContext context) throws InvalidDatatypeValueException {
        byte[] decoded = Base64.decode(content);
        if (decoded == null)
            throw new InvalidDatatypeValueException("cvc-datatype-valid.1.2.1", new Object[]{content, "base64Binary"});

        return new XBase64(decoded);
    }

    // length of a binary type is the number of bytes
    public int getDataLength(Object value) {
        return ((XBase64)value).getLength();
    }

    /**
     * represent base64 data
     */
    private static final class XBase64 extends ByteListImpl {

        public XBase64(byte[] data) {
            super(data);
        }
        public synchronized String toString() {
            if (canonical == null) {
                canonical = Base64.encode(data);
            }
            return canonical;
        }

        public boolean equals(Object obj) {
            if (!(obj instanceof XBase64))
                return false;
            byte[] odata = ((XBase64)obj).data;
            int len = data.length;
            if (len != odata.length)
                return false;
            for (int i = 0; i < len; i++) {
                if (data[i] != odata[i])
                    return false;
            }
            return true;
        }

        public int hashCode() {
            int hash = 0;
            for (int i = 0; i < data.length; ++i) {
                hash = hash * 37 + (((int) data[i]) & 0xff);
            }
            return hash;
        }
    }
} // class Base64BinaryDV

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