org.datanucleus.store.rdbms.mapping.Rectangle2dDoubleMapping Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of datanucleus-awtgeom Show documentation
Plugin providing DataNucleus support for java.awt.geom types.
The newest version!
/**********************************************************************
Copyright (c) 2007 Thomas Marti and others. All rights reserved.
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.

Contributors:
    ...
**********************************************************************/
package org.datanucleus.store.rdbms.mapping;

import java.awt.geom.Rectangle2D;
import java.sql.PreparedStatement;
import java.sql.ResultSet;

import org.datanucleus.ClassLoaderResolver;
import org.datanucleus.ClassNameConstants;
import org.datanucleus.ExecutionContext;
import org.datanucleus.NucleusContext;
import org.datanucleus.metadata.AbstractMemberMetaData;
import org.datanucleus.store.rdbms.RDBMSStoreManager;
import org.datanucleus.store.rdbms.mapping.java.SingleFieldMultiMapping;
import org.datanucleus.store.rdbms.table.Table;

/**
 * Mapping for java.awt.geom.Rectangle2D.Double, maps the x, y, width and height values to double-precision 
 * datastore fields.
 */
public class Rectangle2dDoubleMapping extends SingleFieldMultiMapping
{
    /* (non-Javadoc)
     * @see org.datanucleus.store.rdbms.mapping.JavaTypeMapping#initialize(AbstractMemberMetaData, DatastoreContainerObject, ClassLoaderResolver)
     */
    public void initialize(AbstractMemberMetaData fmd, Table table, ClassLoaderResolver clr)
    {
        super.initialize(fmd, table, clr);
        addColumns();
    }

    /* (non-Javadoc)
     * @see org.datanucleus.store.rdbms.mapping.JavaTypeMapping#initialize(RDBMSStoreManager, java.lang.String)
     */
    public void initialize(RDBMSStoreManager storeMgr, String type)
    {
        super.initialize(storeMgr, type);
        addColumns();
    }

    protected void addColumns()
    {
        addColumns(ClassNameConstants.DOUBLE); // X
        addColumns(ClassNameConstants.DOUBLE); // Y
        addColumns(ClassNameConstants.DOUBLE); // Width
        addColumns(ClassNameConstants.DOUBLE); // Height
    }

    /* (non-Javadoc)
     * @see org.datanucleus.store.mapping.JavaTypeMapping#getJavaType()
     */
    public Class getJavaType()
    {
        return Rectangle2D.Double.class;
    }

    /**
     * Method to return the value to be stored in the specified datastore index given the overall
     * value for this java type.
     * @param index The datastore index
     * @param value The overall value for this java type
     * @return The value for this datastore index
     */
    public Object getValueForDatastoreMapping(NucleusContext nucleusCtx, int index, Object value)
    {
        Rectangle2D.Double qc = (Rectangle2D.Double)value;
        if (index == 0)
        {
            return qc.getX();
        }
        else if (index == 1)
        {
            return qc.getY();
        }
        else if (index == 2)
        {
            return qc.getWidth();
        }
        else if (index == 3)
        {
            return qc.getHeight();
        }
        throw new IndexOutOfBoundsException();
    }

    /* (non-Javadoc)
     * @see org.datanucleus.store.mapping.JavaTypeMapping#setObject(org.datanucleus.ExecutionContext, java.lang.Object, int[], java.lang.Object)
     */
    public void setObject(ExecutionContext ec, PreparedStatement ps, int[] exprIndex, Object value)
    {
    	Rectangle2D rectangle = (Rectangle2D)value;
        if (rectangle == null)
        {
    		for (int i = 0; i < exprIndex.length; i++) 
    		{
    			getDatastoreMapping(i).setObject(ps, exprIndex[i], null);					
			}
        }
        else
        {
            getDatastoreMapping(0).setDouble(ps,exprIndex[0],rectangle.getX());
            getDatastoreMapping(1).setDouble(ps,exprIndex[1],rectangle.getY());
            getDatastoreMapping(2).setDouble(ps,exprIndex[2],rectangle.getWidth());
            getDatastoreMapping(3).setDouble(ps,exprIndex[3],rectangle.getHeight());
        }
    }
    
    /* (non-Javadoc)
     * @see org.datanucleus.store.mapping.JavaTypeMapping#getObject(org.datanucleus.ExecutionContext, java.lang.Object, int[])
     */
    public Object getObject(ExecutionContext ec, ResultSet resultSet, int[] exprIndex)
    {
        // Check for null entries
        if (getDatastoreMapping(0).getObject(resultSet, exprIndex[0]) == null)
        {
            return null;
        }

        double x = getDatastoreMapping(0).getDouble(resultSet,exprIndex[0]); 
        double y = getDatastoreMapping(1).getDouble(resultSet,exprIndex[1]); 
        double width  = getDatastoreMapping(2).getDouble(resultSet,exprIndex[2]); 
        double height = getDatastoreMapping(3).getDouble(resultSet,exprIndex[3]);
        return new Rectangle2D.Double(x, y, width, height);
    }
}