Examples with GridSqlTable org.apache.ignite.internal.processors.query.h2.sql.GridSqlTable used on opensource projects

Example 1 with GridSqlTable

use of org.apache.ignite.internal.processors.query.h2.sql.GridSqlTable 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 2 with GridSqlTable

use of org.apache.ignite.internal.processors.query.h2.sql.GridSqlTable 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 3 with GridSqlTable

use of org.apache.ignite.internal.processors.query.h2.sql.GridSqlTable in project ignite by apache.

the class UpdatePlanBuilder method verifyUpdateColumns.

/**
     * Check that UPDATE statement affects no key columns.
     *
     * @param statement Statement.
     */
private static void verifyUpdateColumns(GridSqlStatement statement) {
    if (statement == null || !(statement instanceof GridSqlUpdate))
        return;
    GridSqlUpdate update = (GridSqlUpdate) statement;
    GridSqlElement updTarget = update.target();
    Set<GridSqlTable> tbls = new HashSet<>();
    DmlAstUtils.collectAllGridTablesInTarget(updTarget, tbls);
    if (tbls.size() != 1)
        throw new IgniteSQLException("Failed to determine target table for UPDATE", IgniteQueryErrorCode.TABLE_NOT_FOUND);
    GridSqlTable tbl = tbls.iterator().next();
    GridH2Table gridTbl = tbl.dataTable();
    if (updateAffectsKeyColumns(gridTbl, update.set().keySet()))
        throw new IgniteSQLException("SQL UPDATE can't modify key or its fields directly", IgniteQueryErrorCode.KEY_UPDATE);
}

Example 4 with GridSqlTable

use of org.apache.ignite.internal.processors.query.h2.sql.GridSqlTable in project ignite by apache.

the class UpdatePlanBuilder method planForInsert.

/**
     * Prepare update plan for INSERT or MERGE.
     *
     * @param stmt INSERT or MERGE statement.
     * @return Update plan.
     * @throws IgniteCheckedException if failed.
     */
@SuppressWarnings("ConstantConditions")
private static UpdatePlan planForInsert(GridSqlStatement stmt) throws IgniteCheckedException {
    GridSqlQuery sel;
    GridSqlElement target;
    GridSqlColumn[] cols;
    boolean isTwoStepSubqry;
    int rowsNum;
    GridSqlTable tbl;
    GridH2RowDescriptor desc;
    if (stmt instanceof GridSqlInsert) {
        GridSqlInsert ins = (GridSqlInsert) stmt;
        target = ins.into();
        tbl = gridTableForElement(target);
        desc = tbl.dataTable().rowDescriptor();
        cols = ins.columns();
        sel = DmlAstUtils.selectForInsertOrMerge(cols, ins.rows(), ins.query(), desc);
        isTwoStepSubqry = (ins.query() != null);
        rowsNum = isTwoStepSubqry ? 0 : ins.rows().size();
    } else if (stmt instanceof GridSqlMerge) {
        GridSqlMerge merge = (GridSqlMerge) stmt;
        target = merge.into();
        tbl = gridTableForElement(target);
        desc = tbl.dataTable().rowDescriptor();
        // This check also protects us from attempts to update key or its fields directly -
        // when no key except cache key can be used, it will serve only for uniqueness checks,
        // not for updates, and hence will allow putting new pairs only.
        // We don't quote _key and _val column names on CREATE TABLE, so they are always uppercase here.
        GridSqlColumn[] keys = merge.keys();
        if (keys.length != 1 || !desc.isKeyColumn(tbl.dataTable().getColumn(keys[0].columnName()).getColumnId()))
            throw new CacheException("SQL MERGE does not support arbitrary keys");
        cols = merge.columns();
        sel = DmlAstUtils.selectForInsertOrMerge(cols, merge.rows(), merge.query(), desc);
        isTwoStepSubqry = (merge.query() != null);
        rowsNum = isTwoStepSubqry ? 0 : merge.rows().size();
    } else
        throw new IgniteSQLException("Unexpected DML operation [cls=" + stmt.getClass().getName() + ']', IgniteQueryErrorCode.UNEXPECTED_OPERATION);
    // Let's set the flag only for subqueries that have their FROM specified.
    isTwoStepSubqry = (isTwoStepSubqry && (sel instanceof GridSqlUnion || (sel instanceof GridSqlSelect && ((GridSqlSelect) sel).from() != null)));
    int keyColIdx = -1;
    int valColIdx = -1;
    boolean hasKeyProps = false;
    boolean hasValProps = false;
    if (desc == null)
        throw new IgniteSQLException("Row descriptor undefined for table '" + tbl.dataTable().getName() + "'", IgniteQueryErrorCode.NULL_TABLE_DESCRIPTOR);
    GridCacheContext<?, ?> cctx = desc.context();
    String[] colNames = new String[cols.length];
    int[] colTypes = new int[cols.length];
    for (int i = 0; i < cols.length; i++) {
        GridSqlColumn col = cols[i];
        String colName = col.columnName();
        colNames[i] = colName;
        colTypes[i] = col.resultType().type();
        int colId = col.column().getColumnId();
        if (desc.isKeyColumn(colId)) {
            keyColIdx = i;
            continue;
        }
        if (desc.isValueColumn(colId)) {
            valColIdx = i;
            continue;
        }
        GridQueryProperty prop = desc.type().property(colName);
        assert prop != null : "Property '" + colName + "' not found.";
        if (prop.key())
            hasKeyProps = true;
        else
            hasValProps = true;
    }
    KeyValueSupplier keySupplier = createSupplier(cctx, desc.type(), keyColIdx, hasKeyProps, true, false);
    KeyValueSupplier valSupplier = createSupplier(cctx, desc.type(), valColIdx, hasValProps, false, false);
    if (stmt instanceof GridSqlMerge)
        return UpdatePlan.forMerge(tbl.dataTable(), colNames, colTypes, keySupplier, valSupplier, keyColIdx, valColIdx, sel.getSQL(), !isTwoStepSubqry, rowsNum);
    else
        return UpdatePlan.forInsert(tbl.dataTable(), colNames, colTypes, keySupplier, valSupplier, keyColIdx, valColIdx, sel.getSQL(), !isTwoStepSubqry, rowsNum);
}

Example 5 with GridSqlTable

use of org.apache.ignite.internal.processors.query.h2.sql.GridSqlTable in project ignite by apache.

the class UpdatePlanBuilder method planForUpdate.

/**
     * Prepare update plan for UPDATE or DELETE.
     *
     * @param stmt UPDATE or DELETE statement.
     * @param errKeysPos index to inject param for re-run keys at. Null if it's not a re-run plan.
     * @return Update plan.
     * @throws IgniteCheckedException if failed.
     */
private static UpdatePlan planForUpdate(GridSqlStatement stmt, @Nullable Integer errKeysPos) throws IgniteCheckedException {
    GridSqlElement target;
    FastUpdateArguments fastUpdate;
    UpdateMode mode;
    if (stmt instanceof GridSqlUpdate) {
        // Let's verify that user is not trying to mess with key's columns directly
        verifyUpdateColumns(stmt);
        GridSqlUpdate update = (GridSqlUpdate) stmt;
        target = update.target();
        fastUpdate = DmlAstUtils.getFastUpdateArgs(update);
        mode = UpdateMode.UPDATE;
    } else if (stmt instanceof GridSqlDelete) {
        GridSqlDelete del = (GridSqlDelete) stmt;
        target = del.from();
        fastUpdate = DmlAstUtils.getFastDeleteArgs(del);
        mode = UpdateMode.DELETE;
    } else
        throw new IgniteSQLException("Unexpected DML operation [cls=" + stmt.getClass().getName() + ']', IgniteQueryErrorCode.UNEXPECTED_OPERATION);
    GridSqlTable tbl = gridTableForElement(target);
    GridH2Table gridTbl = tbl.dataTable();
    GridH2RowDescriptor desc = gridTbl.rowDescriptor();
    if (desc == null)
        throw new IgniteSQLException("Row descriptor undefined for table '" + gridTbl.getName() + "'", IgniteQueryErrorCode.NULL_TABLE_DESCRIPTOR);
    if (fastUpdate != null)
        return UpdatePlan.forFastUpdate(mode, gridTbl, fastUpdate);
    else {
        GridSqlSelect sel;
        if (stmt instanceof GridSqlUpdate) {
            List<GridSqlColumn> updatedCols = ((GridSqlUpdate) stmt).cols();
            int valColIdx = -1;
            String[] colNames = new String[updatedCols.size()];
            int[] colTypes = new int[updatedCols.size()];
            for (int i = 0; i < updatedCols.size(); i++) {
                colNames[i] = updatedCols.get(i).columnName();
                colTypes[i] = updatedCols.get(i).resultType().type();
                Column column = updatedCols.get(i).column();
                if (desc.isValueColumn(column.getColumnId()))
                    valColIdx = i;
            }
            boolean hasNewVal = (valColIdx != -1);
            // Statement updates distinct properties if it does not have _val in updated columns list
            // or if its list of updated columns includes only _val, i.e. is single element.
            boolean hasProps = !hasNewVal || updatedCols.size() > 1;
            // Index of new _val in results of SELECT
            if (hasNewVal)
                valColIdx += 2;
            int newValColIdx = (hasNewVal ? valColIdx : 1);
            KeyValueSupplier newValSupplier = createSupplier(desc.context(), desc.type(), newValColIdx, hasProps, false, true);
            sel = DmlAstUtils.selectForUpdate((GridSqlUpdate) stmt, errKeysPos);
            return UpdatePlan.forUpdate(gridTbl, colNames, colTypes, newValSupplier, valColIdx, sel.getSQL());
        } else {
            sel = DmlAstUtils.selectForDelete((GridSqlDelete) stmt, errKeysPos);
            return UpdatePlan.forDelete(gridTbl, sel.getSQL());
        }
    }
}