/*
* Copyright 2015 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
*
* 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.kie.server.common.rest.variant;
import java.math.BigDecimal;
import java.math.MathContext;
/**
* Copied from RestEasy 2.3.6.Final with no modifications
* Can be deleted when RESTEASY-960 is fixed
*
* A individual variant quality bean for the <span title="Remote Variant Selection Algorithm">RVSA</span>.
*
* @see "RFC 2296"
*/
public class VariantQuality
{
private QualityValue mediaTypeQualityValue = QualityValue.DEFAULT;
private QualityValue characterSetQualityValue = QualityValue.DEFAULT;
private QualityValue encodingQualityValue = QualityValue.DEFAULT;
private QualityValue languageQualityValue = QualityValue.DEFAULT;
public VariantQuality()
{
}
public void setMediaTypeQualityValue(QualityValue value)
{
if (value == null)
mediaTypeQualityValue = QualityValue.DEFAULT;
else
mediaTypeQualityValue = value;
}
public void setCharacterSetQualityValue(QualityValue value)
{
if (value == null)
characterSetQualityValue = QualityValue.DEFAULT;
else
characterSetQualityValue = value;
}
public void setEncodingQualityValue(QualityValue value)
{
if (value == null)
encodingQualityValue = QualityValue.DEFAULT;
else
encodingQualityValue = value;
}
public void setLanguageQualityValue(QualityValue value)
{
if (value == null)
languageQualityValue = QualityValue.DEFAULT;
else
languageQualityValue = value;
}
/**
* @return the quality value between zero and one with five decimal places after the point.
* @see "3.3 Computing overall quality values"
*/
public BigDecimal getOverallQuality()
{
BigDecimal qt = BigDecimal.valueOf(mediaTypeQualityValue.intValue(), 3);
BigDecimal qc = BigDecimal.valueOf(characterSetQualityValue.intValue(), 3);
BigDecimal qe = BigDecimal.valueOf(encodingQualityValue.intValue(), 3);
BigDecimal ql = BigDecimal.valueOf(languageQualityValue.intValue(), 3);
assert qt.compareTo(BigDecimal.ZERO) >= 0 && qt.compareTo(BigDecimal.ONE) <= 0;
assert qc.compareTo(BigDecimal.ZERO) >= 0 && qc.compareTo(BigDecimal.ONE) <= 0;
assert qe.compareTo(BigDecimal.ZERO) >= 0 && qe.compareTo(BigDecimal.ONE) <= 0;
assert ql.compareTo(BigDecimal.ZERO) >= 0 && ql.compareTo(BigDecimal.ONE) <= 0;
BigDecimal result = qt;
result = result.multiply(qc, MathContext.DECIMAL32);
result = result.multiply(qe, MathContext.DECIMAL32);
result = result.multiply(ql, MathContext.DECIMAL32);
assert result.compareTo(BigDecimal.ZERO) >= 0 && result.compareTo(BigDecimal.ONE) <= 0;
long round5 = result.scaleByPowerOfTen(5).longValue();
result = BigDecimal.valueOf(round5, 5);
assert result.compareTo(BigDecimal.ZERO) >= 0 && result.compareTo(BigDecimal.ONE) <= 0;
return result;
}
}