Application: gvSIG desktop

package org.gvsig.raster.lib.buffer.impl;

import org.gvsig.raster.lib.buffer.api.BufferManager;

import org.gvsig.raster.lib.buffer.api.NoData;

/**

 * @author fdiaz

 *

 */

public class DefaultNoData implements NoData {

    Number value;

    Number defaultValue;

    /**

     * @param defaultValue

     */

    public DefaultNoData(Number defaultValue) {

        this.defaultValue = defaultValue;

        this.value = this.defaultValue;

    }

    /**

     * Sets the default value

     *

     * @param defaultValue

     */

    public void setDefaultValue(Number defaultValue){

        this.defaultValue = defaultValue;

    }

    @Override

    public int compareTo(NoData o) {

        Number aux = null;

        if(o.isDefined()){

            aux = o.getValue();

        }

        return ((Comparable)value).compareTo((Comparable)aux);

    }

    @Override

    public boolean equals(Object obj) {

        if(obj instanceof NoData){

            return compareTo((NoData)obj)==0;

        }

        return super.equals(obj);

    }

    @Override

    public Number getValue() {

        return this.value;

    }

    @Override

    public void setValue(Number value) {

        //FIXME: ?Comprobar que value y this.value o defaultValue son del mismo tipo?

        this.value = value;

    }

    @Override

    public boolean isDefined() {

        return value!=null;

    }

    @Override

    public void clear() {

        this.value = null;

    }

    @Override

    public void restore() {

        this.value = this.defaultValue;

    }

    @Override

    public Number getDefaultValue() {

        return this.defaultValue;

    }

    @Override

    public int getDataType() {

        if(value instanceof Byte) {

            return BufferManager.TYPE_BYTE;

        }

        if(value instanceof Short) {

            return BufferManager.TYPE_SHORT;

        }

        if(value instanceof Integer) {

            return BufferManager.TYPE_INT;

        }

        if(value instanceof Float) {

            return BufferManager.TYPE_FLOAT;

        }

        if(value instanceof Double) {

            return BufferManager.TYPE_DOUBLE;

        }

        return BufferManager.TYPE_UNDEFINED;

    }

    @Override

    public void copyFrom(NoData noData) {

        this.defaultValue = noData.getDefaultValue();

        this.value = noData.getValue();

    }

    @Override

    public Object clone() throws CloneNotSupportedException {

        DefaultNoData cloned = (DefaultNoData)super.clone();

        cloned.setDefaultValue(this.getDefaultValue());

        cloned.setValue(getValue());

        return cloned;

    }

}