+
−/*
+
− * This Source Code Form is subject to the terms of the Mozilla Public
+
− * License, v. 2.0.  If a copy of the MPL was not distributed with this
+
− * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
− *
+
− * Copyright 2016 MonetDB B.V.
+
− */
+
−
+
−package nl.cwi.monetdb.embedded.resultset;
+
−
+
−import nl.cwi.monetdb.embedded.env.MonetDBEmbeddedException;
+
−
+
−/**
+
− * A MonetDB column converted to an array of Java short values.
+
− *
+
− * @author <a href="mailto:pedro.ferreira@monetdbsolutions.com">Pedro Ferreira</a>
+
− */
+
−public final class QueryResultSetShortColumn extends AbstractQueryResultSetColumn<short[]> {
+
−
+
−    /**
+
−     * Gets MonetDB's short null constant
+
−     *
+
−     * @return MonetDB's short null constant
+
−     */
+
−    public static native short GetShortNullConstant();
+
−
+
−    /**
+
−     * Checks if the short value is null or not.
+
−     *
+
−     * @param value The value to evaluate
+
−     * @return If the short value is null or not.
+
−     */
+
−    public static native boolean CheckShortIsNull(short value);
+
−
+
−    /**
+
−     * Array with the retrieved values.
+
−     */
+
−    private final short[] values;
+
−
+
−    protected QueryResultSetShortColumn(String columnType, long tablePointer, int resultSetIndex, String columnName,
+
−                                        int columnDigits, int columnScale, int numberOfRows) {
+
−        super(columnType, tablePointer, resultSetIndex, columnName, columnDigits, columnScale, numberOfRows);
+
−        if(!this.getMapping().getJavaClass().equals(Short.class)) {
+
−            throw new ClassCastException("The parameter must be of short type!!");
+
−        }
+
−        this.values = new short[numberOfRows];
+
−    }
+
−
+
−    @Override
+
−    protected void fetchMoreData(int startIndex, int endIndex) throws MonetDBEmbeddedException {
+
−        short[] values = this.fetchValuesInternal(this.tablePointer, this.resultSetIndex, startIndex, endIndex);
+
−        System.arraycopy(values, 0, this.values, startIndex, values.length);
+
−    }
+
−
+
−    @Override
+
−    protected short[] storeNewDataAndGetResult(int startIndex, int numberOfRowsToRetrieve) {
+
−        short[] result = new short[numberOfRowsToRetrieve];
+
−        System.arraycopy(this.values, startIndex, result, 0, numberOfRowsToRetrieve);
+
−        return result;
+
−    }
+
−
+
−    @Override
+
−    protected boolean[] checkIfIndexesAreNullImplementation(short[] values, boolean[] res) throws MonetDBEmbeddedException {
+
−        short nil = GetShortNullConstant();
+
−        for(int i = 0 ; i < values.length ; i++) {
+
−            res[i] = (values[i] == nil);
+
−        }
+
−        return res;
+
−    }
+
−
+
−    @Override
+
−    protected Short[] mapValuesToObjectArrayImplementation(short[] values) throws MonetDBEmbeddedException {
+
−        short nil = GetShortNullConstant();
+
−        Short[] res = new Short[values.length];
+
−        for(int i = 0 ; i < values.length ; i++) {
+
−            res[i] = (values[i] == nil) ? null : values[i];
+
−        }
+
−        return res;
+
−    }
+
−
+
−    /**
+
−     * Internal implementation to fetch values from the column.
+
−     */
+
−    private native short[] fetchValuesInternal(long tablePointer, int resultSetIndex, int startIndex, int endIndex)
+
−            throws MonetDBEmbeddedException;
+
−}