/*
* 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.flink.graph.drivers.parameter;
import org.apache.flink.api.java.utils.ParameterTool;
/**
* A {@link Parameter} storing a {@link Double}.
*/
public class DoubleParameter
extends SimpleParameter<Double> {
private boolean hasMinimumValue = false;
private boolean minimumValueInclusive;
private double minimumValue;
private boolean hasMaximumValue = false;
private boolean maximumValueInclusive;
private double maximumValue;
/**
* Set the parameter name and add this parameter to the list of parameters
* stored by owner.
*
* @param owner the {@link Parameterized} using this {@link Parameter}
* @param name the parameter name
*/
public DoubleParameter(ParameterizedBase owner, String name) {
super(owner, name);
}
/**
* Set the default value.
*
* @param defaultValue the default value
* @return this
*/
public DoubleParameter setDefaultValue(double defaultValue) {
super.setDefaultValue(defaultValue);
if (hasMinimumValue) {
if (minimumValueInclusive) {
Util.checkParameter(defaultValue >= minimumValue,
"Default value (" + defaultValue + ") must be greater than or equal to minimum (" + minimumValue + ")");
} else {
Util.checkParameter(defaultValue > minimumValue,
"Default value (" + defaultValue + ") must be greater than minimum (" + minimumValue + ")");
}
}
if (hasMaximumValue) {
if (maximumValueInclusive) {
Util.checkParameter(defaultValue <= maximumValue,
"Default value (" + defaultValue + ") must be less than or equal to maximum (" + maximumValue + ")");
} else {
Util.checkParameter(defaultValue < maximumValue,
"Default value (" + defaultValue + ") must be less than maximum (" + maximumValue + ")");
}
}
return this;
}
/**
* Set the minimum value. The minimum value is an acceptable value if and
* only if inclusive is set to true.
*
* @param minimumValue the minimum value
* @param inclusive whether the minimum value is a valid value
* @return this
*/
public DoubleParameter setMinimumValue(double minimumValue, boolean inclusive) {
if (hasDefaultValue) {
if (inclusive) {
Util.checkParameter(minimumValue <= defaultValue,
"Minimum value (" + minimumValue + ") must be less than or equal to default (" + defaultValue + ")");
} else {
Util.checkParameter(minimumValue < defaultValue,
"Minimum value (" + minimumValue + ") must be less than default (" + defaultValue + ")");
}
} else if (hasMaximumValue) {
if (inclusive && maximumValueInclusive) {
Util.checkParameter(minimumValue <= maximumValue,
"Minimum value (" + minimumValue + ") must be less than or equal to maximum (" + maximumValue + ")");
} else {
Util.checkParameter(minimumValue < maximumValue,
"Minimum value (" + minimumValue + ") must be less than maximum (" + maximumValue + ")");
}
}
this.hasMinimumValue = true;
this.minimumValue = minimumValue;
this.minimumValueInclusive = inclusive;
return this;
}
/**
* Set the maximum value. The maximum value is an acceptable value if and
* only if inclusive is set to true.
*
* @param maximumValue the maximum value
* @param inclusive whether the maximum value is a valid value
* @return this
*/
public DoubleParameter setMaximumValue(double maximumValue, boolean inclusive) {
if (hasDefaultValue) {
if (inclusive) {
Util.checkParameter(maximumValue >= defaultValue,
"Maximum value (" + maximumValue + ") must be greater than or equal to default (" + defaultValue + ")");
} else {
Util.checkParameter(maximumValue > defaultValue,
"Maximum value (" + maximumValue + ") must be greater than default (" + defaultValue + ")");
}
} else if (hasMinimumValue) {
if (inclusive && minimumValueInclusive) {
Util.checkParameter(maximumValue >= minimumValue,
"Maximum value (" + maximumValue + ") must be greater than or equal to minimum (" + minimumValue + ")");
} else {
Util.checkParameter(maximumValue > minimumValue,
"Maximum value (" + maximumValue + ") must be greater than minimum (" + minimumValue + ")");
}
}
this.hasMaximumValue = true;
this.maximumValue = maximumValue;
this.maximumValueInclusive = inclusive;
return this;
}
@Override
public void configure(ParameterTool parameterTool) {
value = hasDefaultValue ? parameterTool.getDouble(name, defaultValue) : parameterTool.getDouble(name);
if (hasMinimumValue) {
if (minimumValueInclusive) {
Util.checkParameter(value >= minimumValue,
name + " must be greater than or equal to " + minimumValue);
} else {
Util.checkParameter(value > minimumValue,
name + " must be greater than " + minimumValue);
}
}
if (hasMaximumValue) {
if (maximumValueInclusive) {
Util.checkParameter(value <= maximumValue,
name + " must be less than or equal to " + maximumValue);
} else {
Util.checkParameter(value < maximumValue,
name + " must be less than " + maximumValue);
}
}
}
@Override
public String toString() {
return Double.toString(value);
}
}