import org.opengis.filter.expression.Add; //导入依赖的package包/类
@Override
public Object visit(
		final Add expression,
		final Object data ) {
	return new ExtractGeometryFilterVisitorResult(
			infinity(),
			null);
}
 

import org.opengis.filter.expression.Add; //导入依赖的package包/类
@Override
public Object visit(
		final Add expression,
		final Object data ) {
	return expression.accept(
			this,
			data);
}
 

import org.opengis.filter.expression.Add; //导入依赖的package包/类
public Object visit(Add expression, Object extraData) {
    throw new UnsupportedOperationException("Add expressions not supported");
}
 

import org.opengis.filter.expression.Add; //导入依赖的package包/类
@Override
public Object visit(Add add, Object o) {
    throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
}
 

import org.opengis.filter.expression.Add; //导入依赖的package包/类
@Override
public Object visit(
		final Add expression,
		final Object data ) {
	return new PropertyConstraintSet();
}