Application: gvSIG desktop » Library: org.gvsig.tools

import java.nio.ByteBuffer;

import java.util.Date;

import org.gvsig.tools.dataTypes.AbstractCoercion;

import org.gvsig.tools.dataTypes.CoercionContext;

import org.gvsig.tools.dataTypes.DataTypesManager;

public class CoerceToBytearray extends AbstractCoercion {

  @Override

  public Object coerce(Object value, CoercionContext context) throws CoercionException {

    if (value == null || value instanceof Byte[]) {

      return value;

    }

    try {

      if (value instanceof CharSequence) {

        return value.toString().getBytes();

      }

      if( value instanceof Number ) {

        if( value instanceof Short ) {

          ByteBuffer buffer = ByteBuffer.allocate(2);

          buffer.putShort((short) value);

          return buffer.array();

        } else if( value instanceof Integer ) {

          ByteBuffer buffer = ByteBuffer.allocate(4);

          buffer.putInt((int) value);

          return buffer.array();

        } else if( value instanceof Long ) {

          ByteBuffer buffer = ByteBuffer.allocate(8);

          buffer.putLong((long) value);

          return buffer.array();

        } else if( value instanceof Float ) {

          ByteBuffer buffer = ByteBuffer.allocate(4);

          buffer.putFloat((float) value);

          return buffer.array();

        } else {

          ByteBuffer buffer = ByteBuffer.allocate(8);

          buffer.putDouble((double) value);

          return buffer.array();

      } else if( value instanceof Date ) {

          ByteBuffer buffer = ByteBuffer.allocate(8);

          buffer.putLong(((Date)value).getTime());

          return buffer.array();

      }

    } catch (Exception e) {

      throw new CoercionException(e);

    throw new CoercionException("Can't coerce '" + value.getClass().getName() + "' to byte[].");

  }