+
−package nl.cwi.monetdb.embedded.tables;
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−
+
−import nl.cwi.monetdb.embedded.mapping.MonetDBToJavaMapping;
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−
+
−/**
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− * Created by ferreira on 11/7/16.
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− */
+
−public class RowIterator {
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−
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−    /**
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−     * The original table of this iterator.
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−     */
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−    protected final MonetDBTable table;
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−
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−    /**
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−     * The mappings of the columns.
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−     */
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−    protected final MonetDBToJavaMapping[] mappings;
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−
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−    /**
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−     * The columns values as Java objects.
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−     */
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−    protected Object[] columns;
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−
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−    /**
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−     * The current row number.
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−     */
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−    protected int rowNumber;
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−
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−    private final int firstIndex;
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−
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−    private final int lastIndex;
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−
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−    public RowIterator(MonetDBTable table, int firstIndex, int lastIndex) {
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−        this.table = table;
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−        this.mappings = table.getMappings();
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−        this.firstIndex = Math.max(firstIndex, 0);
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−        this.lastIndex = Math.min(lastIndex, table.getNumberOfRows());
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−    }
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−
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−    /**
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−     * Gets the original table of this iterator.
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−     *
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−     * @return The original table of this iterator
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−     */
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−    public MonetDBTable getTable() { return table; }
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−
+
−    /**
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−     * Gets the columns values as Java objects.
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−     *
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−     * @return The columns values as Java objects
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−     */
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−    public Object[] getColumns() {
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−        return columns;
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−    }
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−
+
−    /**
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−     * Gets the current row number in the iteration.
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−     *
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−     * @return The current row number in the iteration
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−     */
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−    public int getRowNumber() { return rowNumber; }
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−
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−    /**
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−     * Gets a column value as a Java class.
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−     *
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−     * @param <T> A Java class mapped to a MonetDB data type
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−     * @param index The index of the column
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−     * @param javaClass The Java class
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−     * @return The column value as a Java class
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−     */
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−    public <T> T getColumn(int index, Class<T> javaClass) {
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−        return javaClass.cast(columns[index]);
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−    }
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−
+
−    /**
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−     * Gets a column value as a Java class using the default mapping.
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−     *
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−     * @param <T> A Java class mapped to a MonetDB data type
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−     * @param index The index of the column
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−     * @return The column value as a Java class
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−     */
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−    public <T> T getColumn(int index) {
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−        Class<T> javaClass = this.mappings[index].getJavaClass();
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−        return javaClass.cast(columns[index]);
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−    }
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−
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−    protected void setNextIteration(Object[] columns, int rowNumber) {
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−        this.columns = columns;
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−        this.rowNumber = rowNumber;
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−    }
+
−}