Package com.foundationdb.qp.row

Source Code of com.foundationdb.qp.row.ValuesRow

/**
* Copyright (C) 2009-2013 FoundationDB, LLC
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* 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/>.
*/

package com.foundationdb.qp.row;

import com.foundationdb.qp.rowtype.RowType;
import com.foundationdb.server.types.TClass;
import com.foundationdb.server.types.TInstance;
import com.foundationdb.server.types.value.ValueSource;
import com.foundationdb.server.types.value.ValueSources;

import java.util.Arrays;

public final class ValuesRow extends AbstractRow {
    @Override
    public RowType rowType() {
        return rowType;
    }

    @Override
    public ValueSource uncheckedValue(int i) {
        return values[i];
    }

    @Override
    public HKey hKey() {
        return null;
    }

    @Override
    public boolean isBindingsSensitive() {
        return false;
    }

    public ValuesRow(RowType rowType, ValueSource... values) {
        this.rowType = rowType;
        this.values = values;
        if (rowType.nFields() != values.length) {
            throw new IllegalArgumentException(
                    "row type " + rowType + " requires " + rowType.nFields() + " fields, but "
                            + values.length + " values given: " + Arrays.asList(values));
        }
        for (int i = 0, max = values.length; i < max; ++i) {
            TClass requiredType = rowType.typeAt(i).typeClass();
            TClass actualType = TInstance.tClass(values[i].getType());
            if (requiredType != actualType)
                throw new IllegalArgumentException("value " + i + " should be " + requiredType
                        + " but was " + actualType);
        }
    }

    public ValuesRow(RowType rowType, Object... objects) {
        this.rowType = rowType;
        values = new ValueSource[rowType.nFields()];
       
        if (rowType.nFields() != objects.length) {
            throw new IllegalArgumentException(
                    "row type " + rowType + " requires " + rowType.nFields() + " fields, but "
                            + objects.length + " values given: " + Arrays.asList(objects));
        }
        for (int i = 0; i < values.length; ++i) {
            values[i] = ValueSources.valuefromObject(objects[i], rowType.typeAt(i));
        }
    }
   
    private final RowType rowType;
    private final ValueSource[] values;
}
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