+
−/*
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− * This Source Code Form is subject to the terms of the Mozilla Public
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− * License, v. 2.0.  If a copy of the MPL was not distributed with this
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− * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
− *
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− * Copyright 2016 MonetDB B.V.
+
− */
+
−
+
−package nl.cwi.monetdb.embedded;
+
−
+
−/**
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− * A single Java representation of a MonetDB column.
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− *
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− * @param <T> A Java class mapped to a MonetDB data type
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− * @author <a href="mailto:pedro.ferreira@monetdbsolutions.com">Pedro Ferreira</a>
+
− */
+
−public abstract class AbstractColumn<T> implements Iterable<T> {
+
−
+
−    /**
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−     * The pointer to the corresponding AbstractQueryResultSet
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−     */
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−    protected final long resultSetPointer;
+
−
+
−    /**
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−     * Index on the AbstractQueryResultSet
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−     */
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−    protected final int resultSetIndex;
+
−
+
−    /**
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−     * The number of rows in this column
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−     */
+
−    protected final int numberOfRows;
+
−
+
−    /**
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−     * The name of the columns in the query result
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−     */
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−    protected final String columnName;
+
−
+
−    /**
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−     * The Mapping between MonetDB type and the Java Class
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−     */
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−    protected final MonetDBToJavaMapping mapping;
+
−
+
−    /**
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−     * The number of digits (radix 2) for numeric types or max length for character/binary strings.
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−     */
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−    protected final int columnDigits;
+
−
+
−    /**
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−     * 	The precision after decimal point. Only applicable for decimal/numeric types.
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−     */
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−    protected final int columnScale;
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−
+
−    protected AbstractColumn(long resultSetPointer, int resultSetIndex, int numberOfRows, String columnName,
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−                             String columnType, int columnDigits, int columnScale) {
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−        this.resultSetPointer = resultSetPointer;
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−        this.resultSetIndex = resultSetIndex;
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−        this.numberOfRows = numberOfRows;
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−        this.columnName = columnName;
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−        this.mapping = Enum.valueOf(MonetDBToJavaMapping.class, columnType);
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−        this.columnDigits = columnDigits;
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−        this.columnScale = columnScale;
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−    }
+
−
+
−    /**
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−     * Get the number of rows in this column
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−     *
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−     * @return The number of rows
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−     */
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−    public int getNumberOfRows() { return numberOfRows; }
+
−
+
−    /**
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−     * Get the result set index of the column.
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−     *
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−     * @return The index number
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−     */
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−    public int getResultSetIndex() { return resultSetIndex; }
+
−
+
−    /**
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−     * Get the name of the column.
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−     *
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−     * @return The column name
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−     */
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−    public String getColumnName() {
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−        return columnName;
+
−    }
+
−
+
−    /**
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−     * Get the type of the column.
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−     *
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−     * @return The Column type
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−     */
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−    public String getColumnType() { return mapping.toString(); }
+
−
+
−    /**
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−     * Get the Java mapping of the column.
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−     *
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−     * @return A enum constant of the Java mapping
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−     */
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−    public MonetDBToJavaMapping getMapping() { return mapping; }
+
−
+
−    /**
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−     * Get column digits of the column.
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−     *
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−     * @return The number of digits
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−     */
+
−    public int getColumnDigits() { return columnDigits; }
+
−
+
−    /**
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−     * Get scale of the column.
+
−     *
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−     * @return The scale
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−     */
+
−    public int getColumnScale() { return columnScale; }
+
−
+
−}