FormulaData.java

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 *
 * Pentaho Data Integration
 *
 * Copyright (C) 2002-2013 by Pentaho : http://www.pentaho.com
 *
 *******************************************************************************
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
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package org.pentaho.di.trans.steps.formula;

import org.pentaho.di.core.row.RowMetaInterface;
import org.pentaho.di.trans.step.BaseStepData;
import org.pentaho.di.trans.step.StepDataInterface;
import org.pentaho.reporting.libraries.formula.EvaluationException;
import org.pentaho.reporting.libraries.formula.Formula;
import org.pentaho.reporting.libraries.formula.parser.FormulaParser;
import org.pentaho.reporting.libraries.formula.parser.ParseException;

/**
 * @author Matt
 * @since 8-sep-2005
 *
 */
public class FormulaData extends BaseStepData implements StepDataInterface {
  public static final int RETURN_TYPE_STRING = 0;
  public static final int RETURN_TYPE_NUMBER = 1;
  public static final int RETURN_TYPE_INTEGER = 2;
  public static final int RETURN_TYPE_LONG = 3;
  public static final int RETURN_TYPE_DATE = 4;
  public static final int RETURN_TYPE_BIGDECIMAL = 5;
  public static final int RETURN_TYPE_BYTE_ARRAY = 6;
  public static final int RETURN_TYPE_BOOLEAN = 7;
  public RowForumulaContext context;
  public Formula[] formulas;
  public FormulaParser parser;
  public RowMetaInterface outputRowMeta;
  public int[] returnType;
  public int[] replaceIndex;

  public FormulaData() {
    super();
  }

  public Formula createFormula( String formulaText ) throws EvaluationException, ParseException {
    Formula result = new Formula( formulaText );
    result.initialize( context );
    return result;
  }
}