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/*
 * Copyright 2015 Objectos, Fábrica de Software LTDA.
 *
 * 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 limitations under
 * the License.
 */
package br.com.objectos.flat;

/**
 * @author [email protected] (Marcio Endo)
 */
public enum ComparisonOperator {

  EQ {
    @Override
    boolean matches(double thisValue, double thatValue) {
      return thisValue == thatValue;
    }
  },

  GE {
    @Override
    boolean matches(double thisValue, double thatValue) {
      return thisValue >= thatValue;
    }
  },

  GT {
    @Override
    boolean matches(double thisValue, double thatValue) {
      return thisValue > thatValue;
    }
  },

  LE {
    @Override
    boolean matches(double thisValue, double thatValue) {
      return thisValue <= thatValue;
    }
  },

  LT {
    @Override
    boolean matches(double thisValue, double thatValue) {
      return thisValue < thatValue;
    }
  },

  NE {
    @Override
    boolean matches(double thisValue, double thatValue) {
      return thisValue != thatValue;
    }
    @Override
    Token token(DecimalColumn column, String text, double value) {
      return new DoubleValue(column, text, value * -1);
    }
  };

  public DoubleValueCondition value(double value) {
    return new DoubleValueCondition(this, value);
  }

  public IntValueCondition value(int value) {
    return new IntValueCondition(this, value);
  }

  abstract boolean matches(double thisValue, double thatValue);

  Token token(DecimalColumn column, String text, double value) {
    return new DoubleValue(column, text, value);
  }

  Token token(IntegerColumn column, String text, int value) {
    return new IntegerValue(column, text, value);
  }

}