Examples with Column org.h2.table.Column used on opensource projects

Example 1 with Column

use of org.h2.table.Column in project ignite by apache.

the class DmlAstUtils method getFastUpdateArgs.

/**
     * @param update UPDATE statement.
     * @return {@code null} if given statement directly updates {@code _val} column with a literal or param value
     * and filters by single non expression key (and, optionally,  by single non expression value).
     */
public static FastUpdateArguments getFastUpdateArgs(GridSqlUpdate update) {
    IgnitePair<GridSqlElement> filter = findKeyValueEqualityCondition(update.where());
    if (filter == null)
        return null;
    if (update.cols().size() != 1)
        return null;
    Table tbl = update.cols().get(0).column().getTable();
    if (!(tbl instanceof GridH2Table))
        return null;
    GridH2RowDescriptor desc = ((GridH2Table) tbl).rowDescriptor();
    if (!desc.isValueColumn(update.cols().get(0).column().getColumnId()))
        return null;
    GridSqlElement set = update.set().get(update.cols().get(0).columnName());
    if (!(set instanceof GridSqlConst || set instanceof GridSqlParameter))
        return null;
    return new FastUpdateArguments(operandForElement(filter.getKey()), operandForElement(filter.getValue()), operandForElement(set));
}

Example 2 with Column

use of org.h2.table.Column in project ignite by apache.

the class DmlAstUtils method selectForUpdate.

/**
     * Generate SQL SELECT based on UPDATE's WHERE, LIMIT, etc.
     *
     * @param update Update statement.
     * @param keysParamIdx Index of new param for the array of keys.
     * @return SELECT statement.
     */
public static GridSqlSelect selectForUpdate(GridSqlUpdate update, @Nullable Integer keysParamIdx) {
    GridSqlSelect mapQry = new GridSqlSelect();
    mapQry.from(update.target());
    Set<GridSqlTable> tbls = new HashSet<>();
    collectAllGridTablesInTarget(update.target(), tbls);
    assert tbls.size() == 1 : "Failed to determine target table for UPDATE";
    GridSqlTable tbl = tbls.iterator().next();
    GridH2Table gridTbl = tbl.dataTable();
    assert gridTbl != null : "Failed to determine target grid table for UPDATE";
    Column h2KeyCol = gridTbl.getColumn(GridH2AbstractKeyValueRow.KEY_COL);
    Column h2ValCol = gridTbl.getColumn(GridH2AbstractKeyValueRow.VAL_COL);
    GridSqlColumn keyCol = new GridSqlColumn(h2KeyCol, tbl, h2KeyCol.getName());
    keyCol.resultType(GridSqlType.fromColumn(h2KeyCol));
    GridSqlColumn valCol = new GridSqlColumn(h2ValCol, tbl, h2ValCol.getName());
    valCol.resultType(GridSqlType.fromColumn(h2ValCol));
    mapQry.addColumn(keyCol, true);
    mapQry.addColumn(valCol, true);
    for (GridSqlColumn c : update.cols()) {
        String newColName = Parser.quoteIdentifier("_upd_" + c.columnName());
        // We have to use aliases to cover cases when the user
        // wants to update _val field directly (if it's a literal)
        GridSqlAlias alias = new GridSqlAlias(newColName, elementOrDefault(update.set().get(c.columnName()), c), true);
        alias.resultType(c.resultType());
        mapQry.addColumn(alias, true);
    }
    GridSqlElement where = update.where();
    if (keysParamIdx != null)
        where = injectKeysFilterParam(where, keyCol, keysParamIdx);
    mapQry.where(where);
    mapQry.limit(update.limit());
    return mapQry;
}

Example 3 with Column

use of org.h2.table.Column in project ignite by apache.

the class DmlAstUtils method selectForDelete.

/**
     * Generate SQL SELECT based on DELETE's WHERE, LIMIT, etc.
     *
     * @param del Delete statement.
     * @param keysParamIdx Index for .
     * @return SELECT statement.
     */
public static GridSqlSelect selectForDelete(GridSqlDelete del, @Nullable Integer keysParamIdx) {
    GridSqlSelect mapQry = new GridSqlSelect();
    mapQry.from(del.from());
    Set<GridSqlTable> tbls = new HashSet<>();
    collectAllGridTablesInTarget(del.from(), tbls);
    assert tbls.size() == 1 : "Failed to determine target table for DELETE";
    GridSqlTable tbl = tbls.iterator().next();
    GridH2Table gridTbl = tbl.dataTable();
    assert gridTbl != null : "Failed to determine target grid table for DELETE";
    Column h2KeyCol = gridTbl.getColumn(GridH2AbstractKeyValueRow.KEY_COL);
    Column h2ValCol = gridTbl.getColumn(GridH2AbstractKeyValueRow.VAL_COL);
    GridSqlColumn keyCol = new GridSqlColumn(h2KeyCol, tbl, h2KeyCol.getName());
    keyCol.resultType(GridSqlType.fromColumn(h2KeyCol));
    GridSqlColumn valCol = new GridSqlColumn(h2ValCol, tbl, h2ValCol.getName());
    valCol.resultType(GridSqlType.fromColumn(h2ValCol));
    mapQry.addColumn(keyCol, true);
    mapQry.addColumn(valCol, true);
    GridSqlElement where = del.where();
    if (keysParamIdx != null)
        where = injectKeysFilterParam(where, keyCol, keysParamIdx);
    mapQry.where(where);
    mapQry.limit(del.limit());
    return mapQry;
}

Example 4 with Column

use of org.h2.table.Column in project ignite by apache.

the class GridSqlQuerySplitter method extractPartitionFromEquality.

/**
 * Analyses the equality operation and extracts the partition if possible
 *
 * @param op AST equality operation.
 * @param ctx Kernal Context.
 * @return partition info, or {@code null} if none identified
 */
private static CacheQueryPartitionInfo extractPartitionFromEquality(GridSqlOperation op, GridKernalContext ctx) throws IgniteCheckedException {
    assert op.operationType() == GridSqlOperationType.EQUAL;
    GridSqlElement left = op.child(0);
    GridSqlElement right = op.child(1);
    if (!(left instanceof GridSqlColumn))
        return null;
    if (!(right instanceof GridSqlConst) && !(right instanceof GridSqlParameter))
        return null;
    GridSqlColumn column = (GridSqlColumn) left;
    assert column.column().getTable() instanceof GridH2Table;
    GridH2Table tbl = (GridH2Table) column.column().getTable();
    GridH2RowDescriptor desc = tbl.rowDescriptor();
    IndexColumn affKeyCol = tbl.getAffinityKeyColumn();
    int colId = column.column().getColumnId();
    if ((affKeyCol == null || colId != affKeyCol.column.getColumnId()) && !desc.isKeyColumn(colId))
        return null;
    if (right instanceof GridSqlConst) {
        GridSqlConst constant = (GridSqlConst) right;
        return new CacheQueryPartitionInfo(ctx.affinity().partition(tbl.cacheName(), constant.value().getObject()), null, null, -1, -1);
    }
    GridSqlParameter param = (GridSqlParameter) right;
    return new CacheQueryPartitionInfo(-1, tbl.cacheName(), tbl.getName(), column.column().getType(), param.index());
}

Example 5 with Column

use of org.h2.table.Column in project ignite by apache.

the class GridH2KeyValueRowOnheap method getValue0.

/**
 * Get real column value.
 *
 * @param col Adjusted column index (without default columns).
 * @return Value.
 */
private Value getValue0(int col) {
    Value v = getCached(col);
    if (v != null)
        return v;
    Object res = desc.columnValue(key.getObject(), val.getObject(), col);
    if (res == null)
        v = ValueNull.INSTANCE;
    else {
        try {
            v = desc.wrap(res, desc.fieldType(col));
        } catch (IgniteCheckedException e) {
            throw DbException.convert(e);
        }
    }
    setCached(col, v);
    return v;
}