org.drools.core.util.MathUtils Maven / Gradle / Ivy
/*
* Copyright 2010 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.
* 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.drools.core.util;
import java.math.BigDecimal;
import java.math.BigInteger;
/**
* Utility methods for math classes
*/
public class MathUtils {
public static BigDecimal getBigDecimal( Object value ) {
BigDecimal ret = null;
if( value != null ) {
if( value instanceof BigDecimal ) {
ret = (BigDecimal) value;
} else if( value instanceof String ) {
ret = new BigDecimal( (String) value );
} else if( value instanceof BigInteger ) {
ret = new BigDecimal( (BigInteger) value );
} else if( value instanceof Number ) {
ret = new BigDecimal( ((Number)value).doubleValue() );
} else {
throw new ClassCastException("Not possible to coerce ["+value+"] from class "+value.getClass()+" into a BigDecimal.");
}
}
return ret;
}
public static BigInteger getBigInteger(Object value) {
BigInteger ret = null;
if ( value != null ) {
if ( value instanceof BigInteger ) {
ret = (BigInteger) value;
} else if ( value instanceof String ) {
ret = new BigInteger( (String) value );
} else if ( value instanceof BigDecimal ) {
ret = ((BigDecimal) value).toBigInteger();
} else if ( value instanceof Number ) {
ret = BigInteger.valueOf( ((Number) value).longValue() );
} else {
throw new ClassCastException( "Not possible to coerce [" + value + "] from class " + value.getClass() + " into a BigInteger." );
}
}
return ret;
}
}