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The Apache Commons Codec package contains simple encoder and decoders for various formats such as Base64 and Hexadecimal. In addition to these widely used encoders and decoders, the codec package also maintains a collection of phonetic encoding utilities.

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/*   Copyright 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 org.apache.xmlbeans.impl.values;

import org.apache.xmlbeans.impl.schema.BuiltinSchemaTypeSystem;
import org.apache.xmlbeans.XmlErrorCodes;
import org.apache.xmlbeans.XmlObject;
import org.apache.xmlbeans.SchemaType;
import org.apache.xmlbeans.XmlBoolean;
import org.apache.xmlbeans.impl.common.ValidationContext;

public abstract class JavaBooleanHolder extends XmlObjectBase
{
    public SchemaType schemaType()
        { return BuiltinSchemaTypeSystem.ST_BOOLEAN; }

    private boolean _value;

    // SIMPLE VALUE ACCESSORS BELOW -------------------------------------------

    // gets raw text value
    protected String compute_text(NamespaceManager nsm) { return _value ? "true" : "false"; }
    protected void set_text(String s)
    {
        _value = validateLexical(s, _voorVc);
    }
    public static boolean validateLexical(String v, ValidationContext context)
    {
        if (v.equals("true") || v.equals("1"))
            return true;

        if (v.equals("false") || v.equals("0"))
            return false;

        context.invalid(XmlErrorCodes.BOOLEAN, new Object[]{ v });

        return false;
    }
    protected void set_nil()
    {
        _value = false;
    }
    // numerics: fractional
    public boolean getBooleanValue() { check_dated(); return _value; }

    // setters
    protected void set_boolean(boolean f)
    {
        _value = f;
    }

    // comparators
    protected int compare_to(XmlObject i)
    {
        // no ordering defined between true and false
        return _value == ((XmlBoolean)i).getBooleanValue() ? 0 : 2;
    }

    protected boolean equal_to(XmlObject i)
    {
        return _value == ((XmlBoolean)i).getBooleanValue();
    }

    protected int value_hash_code()
    {
        return _value ? 957379554 : 676335975;
    }
}