Revision 22512 trunk/extensions/extSymbology/src/org/gvsig/symbology/fmap/rendering/filter/operations/MultOperator.java
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/** |
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* Implements the funcionality of the multiplication operator |
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*
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* |
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* @author Pepe Vidal Salvador - jose.vidal.salvador@iver.es |
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* |
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*/ |
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public class MultOperator implements Expression{
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public class MultOperator extends Operator{
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private ArrayList<Expression> arguments = new ArrayList<Expression>(); |
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public String getName() {
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return OperationTags.MULT_OP; |
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} |
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public Object evaluate(Hashtable<String, Value> symbol_table)throws ExpressionException {
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public MultOperator(Hashtable<String, Value> symbol_table) {
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super(symbol_table); |
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} |
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public Object evaluate()throws ExpressionException {
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Double doubleResult = null; |
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Integer intResult = null; |
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try {
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intResult = (Integer)((Expression)arguments.get(0)).evaluate(symbol_table);
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intResult = (Integer)((Expression)arguments.get(0)).evaluate(); |
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if (arguments.size() == 1) |
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return intResult; |
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for (int i = 1; i < arguments.size(); i++){
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Expression function = (Expression)arguments.get(i); |
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intResult *= ((Integer)function.evaluate(symbol_table));
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intResult *= ((Integer)function.evaluate()); |
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} |
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return intResult; |
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} catch (ClassCastException e) {
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doubleResult = new Double(((Expression)arguments.get(0)).evaluate(symbol_table).toString());
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doubleResult = new Double(((Expression)arguments.get(0)).evaluate().toString()); |
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if(arguments.size() == 1) |
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return doubleResult; |
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for (int i = 1; i < arguments.size(); i++){
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Expression function = (Expression)arguments.get(i); |
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doubleResult *= new Double(((Expression)function).evaluate(symbol_table).toString());
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doubleResult *= new Double(((Expression)function).evaluate().toString()); |
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} |
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return doubleResult; |
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public void addArgument(int i, Expression arg) {
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arguments.add(i, arg); |
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} |
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public String getPattern() {
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return "("+Messages.getString(OperationTags.OPERAND)
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+ OperationTags.MULT_OP +Messages.getString(OperationTags.OPERAND)+ ")\n"+
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+ OperationTags.MULT_OP +Messages.getString(OperationTags.OPERAND)+ ")\n"+ |
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Messages.getString(OperationTags.OPERAND) +" = "+ |
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Messages.getString(OperationTags.NUMERIC_VALUE);
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Messages.getString(OperationTags.NUMERIC_VALUE); |
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} |
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public ArrayList<Expression> getArguments() {
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return arguments; |
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} |
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this.arguments = arguments; |
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} |
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public void check(Hashtable<String, Value> symbol_table) throws ExpressionException {
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public void check() throws ExpressionException {
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for (int i = 0; i < arguments.size(); i++) {
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if(!(arguments.get(i)instanceof NumericalConstant)) |
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throw new ExpressionException(ExpressionException.CLASS_CASTING_EXCEPTION);
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throw new ExpressionException(ExpressionException.CLASS_CASTING_EXCEPTION); |
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} |
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} |
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} |
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