com.quinsoft.zeidon.domains.BigDecimalDomain.java Source code

Introduction

Here is the source code for com.quinsoft.zeidon.domains.BigDecimalDomain.java

Source

/**
This file is part of the Zeidon Java Object Engine (Zeidon JOE).
    
Zeidon JOE is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
    
Zeidon JOE is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.
    
You should have received a copy of the GNU Lesser General Public License
along with Zeidon JOE.  If not, see <http://www.gnu.org/licenses/>.
    
Copyright 2009-2015 QuinSoft
 */

package com.quinsoft.zeidon.domains;

import java.math.BigDecimal;
import java.util.Map;

import org.apache.commons.lang3.StringUtils;

import com.quinsoft.zeidon.Application;
import com.quinsoft.zeidon.AttributeInstance;
import com.quinsoft.zeidon.InvalidAttributeValueException;
import com.quinsoft.zeidon.Task;
import com.quinsoft.zeidon.objectdefinition.AttributeDef;

/**
 * @author DG
 *
 */
public class BigDecimalDomain extends AbstractNumericDomain {
    public BigDecimalDomain(Application application, Map<String, Object> domainProperties, Task task) {
        super(application, domainProperties, task);
    }

    @Override
    public Object convertExternalValue(Task task, AttributeInstance attributeInstance, AttributeDef attributeDef,
            String contextName, Object externalValue) {
        if (externalValue == null)
            return null;

        // If external value is an AttributeInstance then get *its* internal value.
        if (externalValue instanceof AttributeInstance)
            externalValue = ((AttributeInstance) externalValue).getValue();

        // VML operations use "" as synonymous with null.
        if (externalValue instanceof String && StringUtils.isBlank((String) externalValue))
            return null;

        if (externalValue instanceof CharSequence)
            return new BigDecimal(externalValue.toString());

        if (externalValue instanceof Number)
            return new BigDecimal(externalValue.toString());

        throw new InvalidAttributeValueException(attributeDef, externalValue,
                "Can't convert '%s' to BigDecimalDomain", externalValue.getClass().getName());
    }

    @Override
    public void validateInternalValue(Task task, AttributeDef attributeDef, Object internalValue)
            throws InvalidAttributeValueException {
        if (!(internalValue instanceof BigDecimal))
            throw new InvalidAttributeValueException(attributeDef, internalValue,
                    "'%s' is an invalid Object for BigDecimalDomain", internalValue.getClass().getName());
    }

    @Override
    public Object addToAttribute(Task task, AttributeInstance attributeInstance, AttributeDef attributeDef,
            Object currentValue, Object operand) {
        BigDecimal num = (BigDecimal) convertExternalValue(task, attributeInstance, attributeDef, null, operand);
        BigDecimal value = (BigDecimal) currentValue;
        return value.add(num);
    }

    @Override
    public Object multiplyAttribute(Task task, AttributeInstance attributeInstance, AttributeDef attributeDef,
            Object currentValue, Object operand) {
        BigDecimal num = (BigDecimal) convertExternalValue(task, attributeInstance, attributeDef, null, operand);
        BigDecimal value = (BigDecimal) currentValue;
        return value.multiply(num);
    }
}