com.tesora.dve.sql.schema.TColumnDatum.java Source code

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Here is the source code for com.tesora.dve.sql.schema.TColumnDatum.java

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package com.tesora.dve.sql.schema;

/*
 * #%L
 * Tesora Inc.
 * Database Virtualization Engine
 * %%
 * Copyright (C) 2011 - 2014 Tesora Inc.
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License, version 3,
 * as published by the Free Software Foundation.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 * #L%
 */

import org.apache.commons.lang.ArrayUtils;

import com.tesora.dve.db.ValueConverter;
import com.tesora.dve.distribution.ColumnDatum;
import com.tesora.dve.distribution.IColumnDatum;
import com.tesora.dve.sql.ConversionException;

public class TColumnDatum extends TColumnDatumBase {

    private static final long serialVersionUID = 1L;
    private final Object value;

    public TColumnDatum(PEColumn col, Object value) {
        super(col);
        this.value = value;
    }

    @Override
    public Object getValue() {
        if (column.getType().isBinaryType()) {
            if (value instanceof String) {
                return ((String) value).getBytes();
            }
        } else if (column.getType().isNumericType()) {
            try {
                return ValueConverter.INSTANCE.convert(value, column.getType());
            } catch (ConversionException e) {
                // could be conversion of string NULL
                // so just eat the exception and return
                // the value 
            }
        }
        return value;
    }

    @Override
    public int hashCode() {
        Object valueToHash = getValue();
        if (valueToHash != null && valueToHash.getClass().isArray()) {
            return ArrayUtils.hashCode(valueToHash);
        }
        return (valueToHash == null ? 0 : valueToHash.hashCode());
    }

    @Override
    public Comparable<?> getValueForComparison() {
        return ColumnDatum.getValueForComparison(this, value);
    }

    @Override
    public boolean equals(Object o) {
        return ColumnDatum.equals(this, (IColumnDatum) o);
    }

    @Override
    public String toString() {
        return column.getId() + "/" + (value == null ? "null" : value.toString());
    }

    @Override
    public TColumnDatumBase bind(ConnectionValues cv) {
        return this;
    }

}