Examples with Operation org.h2.expression.Operation used on opensource projects

Example 6 with Operation

use of org.h2.expression.Operation in project elastic-core-maven by OrdinaryDude.

the class FullTextTrigger method init.

/**
 * Initialize the trigger (Trigger interface)
 *
 * @param   conn                Database connection
 * @param   schema              Database schema name
 * @param   trigger             Database trigger name
 * @param   table               Database table name
 * @param   before              TRUE if trigger is called before database operation
 * @param   type                Trigger type
 * @throws  SQLException        A SQL error occurred
 */
@Override
public void init(Connection conn, String schema, String trigger, String table, boolean before, int type) throws SQLException {
    // 
    if (!isActive || table.contains("_COPY_")) {
        return;
    }
    // 
    // Access the Lucene index
    // 
    // We need to get the access just once, either in a trigger or in a function alias
    // 
    getIndexAccess(conn);
    // 
    // Get table and index information
    // 
    tableName = schema + "." + table;
    try (Statement stmt = conn.createStatement()) {
        // 
        try (ResultSet rs = stmt.executeQuery("SHOW COLUMNS FROM " + table + " FROM " + schema)) {
            int index = 0;
            while (rs.next()) {
                String columnName = rs.getString("FIELD");
                String columnType = rs.getString("TYPE");
                columnType = columnType.substring(0, columnType.indexOf('('));
                columnNames.add(columnName);
                columnTypes.add(columnType);
                if (columnName.equals("DB_ID")) {
                    dbColumn = index;
                }
                index++;
            }
        }
        if (dbColumn < 0) {
            Logger.logErrorMessage("DB_ID column not found for table " + tableName);
            return;
        }
        // 
        try (ResultSet rs = stmt.executeQuery(String.format("SELECT COLUMNS FROM FTL.INDEXES WHERE SCHEMA = '%s' AND TABLE = '%s'", schema, table))) {
            if (rs.next()) {
                String[] columns = rs.getString(1).split(",");
                for (String column : columns) {
                    int pos = columnNames.indexOf(column);
                    if (pos >= 0) {
                        if (columnTypes.get(pos).equals("VARCHAR")) {
                            indexColumns.add(pos);
                        } else {
                            Logger.logErrorMessage("Indexed column " + column + " in table " + tableName + " is not a string");
                        }
                    } else {
                        Logger.logErrorMessage("Indexed column " + column + " not found in table " + tableName);
                    }
                }
            }
        }
        if (indexColumns.isEmpty()) {
            Logger.logErrorMessage("No indexed columns found for table " + tableName);
            return;
        }
        // 
        // Trigger is enabled
        // 
        isEnabled = true;
        indexTriggers.put(tableName, this);
    } catch (SQLException exc) {
        Logger.logErrorMessage("Unable to get table information", exc);
    }
}

Example 7 with Operation

use of org.h2.expression.Operation in project ignite by apache.

the class UpdatePlanBuilder method planForUpdate.

/**
 * Prepare update plan for UPDATE or DELETE.
 *
 * @param stmt UPDATE or DELETE statement.
 * @param loc Local query flag.
 * @param idx Indexing.
 * @param conn Connection.
 * @param fieldsQuery Original query.
 * @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, boolean loc, IgniteH2Indexing idx, @Nullable Connection conn, @Nullable SqlFieldsQuery fieldsQuery, @Nullable Integer errKeysPos) throws IgniteCheckedException {
    GridSqlElement target;
    FastUpdate 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 = DmlAstUtils.gridTableForElement(target);
    GridH2Table h2Tbl = tbl.dataTable();
    GridH2RowDescriptor desc = h2Tbl.rowDescriptor();
    if (desc == null)
        throw new IgniteSQLException("Row descriptor undefined for table '" + h2Tbl.getName() + "'", IgniteQueryErrorCode.NULL_TABLE_DESCRIPTOR);
    if (fastUpdate != null) {
        return new UpdatePlan(mode, h2Tbl, null, fastUpdate, null);
    } 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 col = updatedCols.get(i).column();
                if (desc.isValueColumn(col.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 valSupplier = createSupplier(desc.context(), desc.type(), newValColIdx, hasProps, false, true);
            sel = DmlAstUtils.selectForUpdate((GridSqlUpdate) stmt, errKeysPos);
            String selectSql = sel.getSQL();
            DmlDistributedPlanInfo distributed = F.isEmpty(selectSql) ? null : checkPlanCanBeDistributed(idx, conn, fieldsQuery, loc, selectSql, tbl.dataTable().cacheName());
            return new UpdatePlan(UpdateMode.UPDATE, h2Tbl, colNames, colTypes, null, valSupplier, -1, valColIdx, selectSql, false, null, 0, null, distributed);
        } else {
            sel = DmlAstUtils.selectForDelete((GridSqlDelete) stmt, errKeysPos);
            String selectSql = sel.getSQL();
            DmlDistributedPlanInfo distributed = F.isEmpty(selectSql) ? null : checkPlanCanBeDistributed(idx, conn, fieldsQuery, loc, selectSql, tbl.dataTable().cacheName());
            return new UpdatePlan(UpdateMode.DELETE, h2Tbl, selectSql, null, distributed);
        }
    }
}

Example 8 with Operation

use of org.h2.expression.Operation in project ignite by apache.

the class GridSqlQueryParser method parseExpression0.

/**
 * @param expression Expression.
 * @param calcTypes Calculate types for all the expressions.
 * @return Parsed expression.
 */
private GridSqlElement parseExpression0(Expression expression, boolean calcTypes) {
    if (expression instanceof ExpressionColumn) {
        ExpressionColumn expCol = (ExpressionColumn) expression;
        return new GridSqlColumn(expCol.getColumn(), parseTableFilter(expCol.getTableFilter()), SCHEMA_NAME.get(expCol), expCol.getOriginalTableAliasName(), expCol.getColumnName());
    }
    if (expression instanceof Alias)
        return new GridSqlAlias(expression.getAlias(), parseExpression(expression.getNonAliasExpression(), calcTypes), true);
    if (expression instanceof ValueExpression)
        // == comparison is legit, see ValueExpression#getSQL()
        return expression == ValueExpression.getDefault() ? GridSqlKeyword.DEFAULT : new GridSqlConst(expression.getValue(null));
    if (expression instanceof Operation) {
        Operation operation = (Operation) expression;
        Integer type = OPERATION_TYPE.get(operation);
        if (type == Operation.NEGATE) {
            assert OPERATION_RIGHT.get(operation) == null;
            return new GridSqlOperation(GridSqlOperationType.NEGATE, parseExpression(OPERATION_LEFT.get(operation), calcTypes));
        }
        return new GridSqlOperation(OPERATION_OP_TYPES[type], parseExpression(OPERATION_LEFT.get(operation), calcTypes), parseExpression(OPERATION_RIGHT.get(operation), calcTypes));
    }
    if (expression instanceof Comparison) {
        Comparison cmp = (Comparison) expression;
        GridSqlOperationType opType = COMPARISON_TYPES[COMPARISON_TYPE.get(cmp)];
        assert opType != null : COMPARISON_TYPE.get(cmp);
        Expression leftExp = COMPARISON_LEFT.get(cmp);
        GridSqlElement left = parseExpression(leftExp, calcTypes);
        if (opType.childrenCount() == 1)
            return new GridSqlOperation(opType, left);
        Expression rightExp = COMPARISON_RIGHT.get(cmp);
        GridSqlElement right = parseExpression(rightExp, calcTypes);
        return new GridSqlOperation(opType, left, right);
    }
    if (expression instanceof ConditionNot)
        return new GridSqlOperation(NOT, parseExpression(expression.getNotIfPossible(null), calcTypes));
    if (expression instanceof ConditionAndOr) {
        ConditionAndOr andOr = (ConditionAndOr) expression;
        int type = ANDOR_TYPE.get(andOr);
        assert type == ConditionAndOr.AND || type == ConditionAndOr.OR;
        return new GridSqlOperation(type == ConditionAndOr.AND ? AND : OR, parseExpression(ANDOR_LEFT.get(andOr), calcTypes), parseExpression(ANDOR_RIGHT.get(andOr), calcTypes));
    }
    if (expression instanceof Subquery) {
        Query qry = ((Subquery) expression).getQuery();
        return parseQueryExpression(qry);
    }
    if (expression instanceof ConditionIn) {
        GridSqlOperation res = new GridSqlOperation(IN);
        res.addChild(parseExpression(LEFT_CI.get((ConditionIn) expression), calcTypes));
        List<Expression> vals = VALUE_LIST_CI.get((ConditionIn) expression);
        for (Expression val : vals) res.addChild(parseExpression(val, calcTypes));
        return res;
    }
    if (expression instanceof ConditionInConstantSet) {
        GridSqlOperation res = new GridSqlOperation(IN);
        res.addChild(parseExpression(LEFT_CICS.get((ConditionInConstantSet) expression), calcTypes));
        List<Expression> vals = VALUE_LIST_CICS.get((ConditionInConstantSet) expression);
        for (Expression val : vals) res.addChild(parseExpression(val, calcTypes));
        return res;
    }
    if (expression instanceof ConditionInSelect) {
        GridSqlOperation res = new GridSqlOperation(IN);
        boolean all = ALL.get((ConditionInSelect) expression);
        int compareType = COMPARE_TYPE.get((ConditionInSelect) expression);
        assert0(!all, expression);
        assert0(compareType == Comparison.EQUAL, expression);
        res.addChild(parseExpression(LEFT_CIS.get((ConditionInSelect) expression), calcTypes));
        Query qry = QUERY_IN.get((ConditionInSelect) expression);
        res.addChild(parseQueryExpression(qry));
        return res;
    }
    if (expression instanceof CompareLike) {
        assert0(ESCAPE.get((CompareLike) expression) == null, expression);
        boolean regexp = REGEXP_CL.get((CompareLike) expression);
        return new GridSqlOperation(regexp ? REGEXP : LIKE, parseExpression(LEFT.get((CompareLike) expression), calcTypes), parseExpression(RIGHT.get((CompareLike) expression), calcTypes));
    }
    if (expression instanceof Function) {
        Function f = (Function) expression;
        GridSqlFunction res = new GridSqlFunction(null, f.getName());
        if (f.getArgs() != null) {
            if (f.getFunctionType() == Function.TABLE || f.getFunctionType() == Function.TABLE_DISTINCT) {
                Column[] cols = FUNC_TBL_COLS.get((TableFunction) f);
                Expression[] args = f.getArgs();
                assert cols.length == args.length;
                for (int i = 0; i < cols.length; i++) {
                    GridSqlElement arg = parseExpression(args[i], calcTypes);
                    GridSqlAlias alias = new GridSqlAlias(cols[i].getName(), arg, false);
                    alias.resultType(fromColumn(cols[i]));
                    res.addChild(alias);
                }
            } else {
                for (Expression arg : f.getArgs()) {
                    if (arg == null) {
                        if (f.getFunctionType() != Function.CASE)
                            throw new IllegalStateException("Function type with null arg: " + f.getFunctionType());
                        res.addChild(GridSqlPlaceholder.EMPTY);
                    } else
                        res.addChild(parseExpression(arg, calcTypes));
                }
            }
        }
        if (f.getFunctionType() == Function.CAST || f.getFunctionType() == Function.CONVERT)
            res.resultType(fromExpression(f));
        return res;
    }
    if (expression instanceof JavaFunction) {
        JavaFunction f = (JavaFunction) expression;
        FunctionAlias alias = FUNC_ALIAS.get(f);
        GridSqlFunction res = new GridSqlFunction(alias.getSchema().getName(), f.getName());
        if (f.getArgs() != null) {
            for (Expression arg : f.getArgs()) res.addChild(parseExpression(arg, calcTypes));
        }
        return res;
    }
    if (expression instanceof Parameter)
        return new GridSqlParameter(((Parameter) expression).getIndex());
    if (expression instanceof Aggregate) {
        int typeId = TYPE.get((Aggregate) expression);
        if (GridSqlAggregateFunction.isValidType(typeId)) {
            GridSqlAggregateFunction res = new GridSqlAggregateFunction(DISTINCT.get((Aggregate) expression), typeId);
            Expression on = ON.get((Aggregate) expression);
            if (on != null)
                res.addChild(parseExpression(on, calcTypes));
            return res;
        }
    }
    if (expression instanceof ExpressionList) {
        Expression[] exprs = EXPR_LIST.get((ExpressionList) expression);
        GridSqlArray res = new GridSqlArray(exprs.length);
        for (Expression expr : exprs) res.addChild(parseExpression(expr, calcTypes));
        return res;
    }
    if (expression instanceof ConditionExists) {
        Query qry = QUERY_EXISTS.get((ConditionExists) expression);
        GridSqlOperation res = new GridSqlOperation(EXISTS);
        res.addChild(parseQueryExpression(qry));
        return res;
    }
    throw new IgniteException("Unsupported expression: " + expression + " [type=" + expression.getClass().getSimpleName() + ']');
}