Examples with SortOrder org.h2.result.SortOrder used on opensource projects

Example 11 with SortOrder

use of org.h2.result.SortOrder in project h2database by h2database.

the class ViewIndex method getQuery.

private Query getQuery(Session session, int[] masks, TableFilter[] filters, int filter, SortOrder sortOrder) {
    Query q = prepareSubQuery(querySQL, session, masks, filters, filter, sortOrder);
    if (masks == null) {
        return q;
    }
    if (!q.allowGlobalConditions()) {
        return q;
    }
    int firstIndexParam = view.getParameterOffset(originalParameters);
    // the column index of each parameter
    // (for example: paramColumnIndex {0, 0} mean
    // param[0] is column 0, and param[1] is also column 0)
    IntArray paramColumnIndex = new IntArray();
    int indexColumnCount = 0;
    for (int i = 0; i < masks.length; i++) {
        int mask = masks[i];
        if (mask == 0) {
            continue;
        }
        indexColumnCount++;
        // the number of parameters depends on the mask;
        // for range queries it is 2: >= x AND <= y
        // but bitMask could also be 7 (=, and <=, and >=)
        int bitCount = Integer.bitCount(mask);
        for (int j = 0; j < bitCount; j++) {
            paramColumnIndex.add(i);
        }
    }
    int len = paramColumnIndex.size();
    ArrayList<Column> columnList = New.arrayList();
    for (int i = 0; i < len; ) {
        int idx = paramColumnIndex.get(i);
        columnList.add(table.getColumn(idx));
        int mask = masks[idx];
        if ((mask & IndexCondition.EQUALITY) != 0) {
            Parameter param = new Parameter(firstIndexParam + i);
            q.addGlobalCondition(param, idx, Comparison.EQUAL_NULL_SAFE);
            i++;
        }
        if ((mask & IndexCondition.START) != 0) {
            Parameter param = new Parameter(firstIndexParam + i);
            q.addGlobalCondition(param, idx, Comparison.BIGGER_EQUAL);
            i++;
        }
        if ((mask & IndexCondition.END) != 0) {
            Parameter param = new Parameter(firstIndexParam + i);
            q.addGlobalCondition(param, idx, Comparison.SMALLER_EQUAL);
            i++;
        }
        if ((mask & IndexCondition.SPATIAL_INTERSECTS) != 0) {
            Parameter param = new Parameter(firstIndexParam + i);
            q.addGlobalCondition(param, idx, Comparison.SPATIAL_INTERSECTS);
            i++;
        }
    }
    columns = columnList.toArray(new Column[0]);
    // reconstruct the index columns from the masks
    this.indexColumns = new IndexColumn[indexColumnCount];
    this.columnIds = new int[indexColumnCount];
    for (int type = 0, indexColumnId = 0; type < 2; type++) {
        for (int i = 0; i < masks.length; i++) {
            int mask = masks[i];
            if (mask == 0) {
                continue;
            }
            if (type == 0) {
                if ((mask & IndexCondition.EQUALITY) == 0) {
                    // the first columns need to be equality conditions
                    continue;
                }
            } else {
                if ((mask & IndexCondition.EQUALITY) != 0) {
                    // after that only range conditions
                    continue;
                }
            }
            IndexColumn c = new IndexColumn();
            c.column = table.getColumn(i);
            indexColumns[indexColumnId] = c;
            columnIds[indexColumnId] = c.column.getColumnId();
            indexColumnId++;
        }
    }
    String sql = q.getPlanSQL();
    q = prepareSubQuery(sql, session, masks, filters, filter, sortOrder);
    return q;
}

Example 12 with SortOrder

use of org.h2.result.SortOrder in project h2database by h2database.

the class ViewIndex method prepareSubQuery.

private static Query prepareSubQuery(String sql, Session session, int[] masks, TableFilter[] filters, int filter, SortOrder sortOrder) {
    Prepared p;
    session.pushSubQueryInfo(masks, filters, filter, sortOrder);
    try {
        p = session.prepare(sql, true, true);
    } finally {
        session.popSubQueryInfo();
    }
    return (Query) p;
}

Example 13 with SortOrder

use of org.h2.result.SortOrder in project h2database by h2database.

the class NonUniqueHashIndex method getCost.

@Override
public double getCost(Session session, int[] masks, TableFilter[] filters, int filter, SortOrder sortOrder, HashSet<Column> allColumnsSet) {
    for (Column column : columns) {
        int index = column.getColumnId();
        int mask = masks[index];
        if ((mask & IndexCondition.EQUALITY) != IndexCondition.EQUALITY) {
            return Long.MAX_VALUE;
        }
    }
    return 2;
}