ByteArrayTypeHandler.java :  » Database-ORM » ODAL » com » completex » objective » components » persistency » type » Java Open Source

package com.completex.objective.components.persistency.type;

import com.completex.objective.components.persistency.core.DatabasePolicy;
import com.completex.objective.components.persistency.PersistentObject;

import java.sql.SQLException;
import java.sql.PreparedStatement;
import java.io.InputStream;
import java.io.ByteArrayOutputStream;
import java.io.ByteArrayInputStream;

/**
 * @author Gennady Krizhevsky
 */
public class ByteArrayTypeHandler extends BinaryTypeHandler {

    public Object transformRead(Object data) throws SQLException {
        if (data instanceof byte[]) {
            return data;       
        } 
        
        InputStream in = (InputStream) super.transformRead(data);
        if (in == null) {
            return null;
        }
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        BlobImpl.writeBlob(in, out);
        return out.toByteArray();
    }

    public void handleBind(PreparedStatement statement, int index,
                           Object value,
                           DatabasePolicy databasePolicy,
                           LobPostProcessings postProcessings,
                           PersistentObject persistentObject,
                           int fieldIndex) throws SQLException {
        byte [] bytes = (byte[]) value;
        ByteArrayInputStream in = new ByteArrayInputStream(bytes);
        super.handleBind(statement, index, in, databasePolicy, postProcessings, persistentObject, fieldIndex);
    }

}