literalattributeclause.java

来自「esri的ArcGIS Server超级学习模板程序（for java）」· Java 代码 · 共 47 行

package com.esri.solutions.jitk.datasources.ogc.filters;

import java.io.IOException;
import java.io.OutputStream;

public class LiteralAttributeClause extends AttributeClause implements IFilterClause  {
	protected String _literal;
	protected boolean _operandsInverted = false;
	
	public LiteralAttributeClause() {
		_operandsInverted = false;
	}
	
	/**
	 * 	<Filter>
			<PropertyIsLessThan>
			<PropertyName>DEPTH</PropertyName>
			<Literal>30</Literal>
			</PropertyIsLessThan>
		</Filter>
	 */
	
	public void toXML(OutputStream os) throws IOException {	
		StringBuilder sb = new StringBuilder();
		sb.append("<ogc:PropertyIs"+ getOperator() + ">");
		
		if (_operandsInverted) {
			sb.append("<ogc:Literal>" + _literal + "</ogc:Literal>");	
			sb.append("<ogc:PropertyName>" + _leftOperandPropertyName + "</ogc:PropertyName>");
		} else {
			sb.append("<ogc:PropertyName>" + _leftOperandPropertyName + "</ogc:PropertyName>");
			sb.append("<ogc:Literal>" + _literal + "</ogc:Literal>");
		}
		
		sb.append("</ogc:PropertyIs" + getOperator() + ">");
		os.write(sb.toString().getBytes());		
	}

	public void setLiteralValue(String val) {
		_literal = val;
	}
	
	public void setOperandsInverted(boolean b) {
		_operandsInverted = b;
	}
}