com.github.sadikovi.riff.tree.expression.ShortExpression.java Source code

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Here is the source code for com.github.sadikovi.riff.tree.expression.ShortExpression.java

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/*
 * Copyright (c) 2017 sadikovi
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package com.github.sadikovi.riff.tree.expression;

import org.apache.spark.sql.catalyst.InternalRow;
import org.apache.spark.sql.types.DataType;
import org.apache.spark.sql.types.DataTypes;

import com.github.sadikovi.riff.column.ColumnFilter;
import com.github.sadikovi.riff.tree.TypedExpression;

/**
 * [[ShortExpression]] to hold short value that used for comparison for all typed bound references.
 */
public class ShortExpression implements TypedExpression<ShortExpression> {
    // value is accessible to equality and comparison methods
    protected final short value;

    public ShortExpression(short value) {
        this.value = value;
    }

    @Override
    public DataType dataType() {
        return DataTypes.ShortType;
    }

    @Override
    public boolean eqExpr(InternalRow row, int ordinal) {
        return row.getShort(ordinal) == value;
    }

    @Override
    public boolean gtExpr(InternalRow row, int ordinal) {
        return row.getShort(ordinal) > value;
    }

    @Override
    public boolean ltExpr(InternalRow row, int ordinal) {
        return row.getShort(ordinal) < value;
    }

    @Override
    public boolean geExpr(InternalRow row, int ordinal) {
        return row.getShort(ordinal) >= value;
    }

    @Override
    public boolean leExpr(InternalRow row, int ordinal) {
        return row.getShort(ordinal) <= value;
    }

    @Override
    public boolean containsExpr(ColumnFilter filter) {
        return filter.mightContain(value);
    }

    @Override
    public int compareTo(ShortExpression obj) {
        if (value == obj.value)
            return 0;
        return value < obj.value ? -1 : 1;
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == null || !(obj instanceof ShortExpression))
            return false;
        ShortExpression expr = (ShortExpression) obj;
        return expr.value == value;
    }

    @Override
    public int hashCode() {
        return value;
    }

    @Override
    public TypedExpression copy() {
        return new ShortExpression(value);
    }

    @Override
    public String prettyString() {
        return "" + value + "s";
    }
}