Examples of com.foundationdb.qp.operator.QueryBindings

com.foundationdb.qp.operator.QueryBindings
The bindings associated with the execution of a query. This includes query parameters (? markers) as well as current values for iteration. More than one QueryBindings may be active at the same time if iteration is being done in parallel for pipelining.

        PostgresStatement stmt = pstmt.getStatement();
        boolean canSuspend = ((stmt instanceof PostgresCursorGenerator) &&
                              ((PostgresCursorGenerator<?>)stmt).canSuspend(this));
        PostgresBoundQueryContext bound = 
            new PostgresBoundQueryContext(this, pstmt, portalName, canSuspend, true);
        QueryBindings bindings = bound.createBindings();
        if (params != null) {
            if (valueDecoder == null)
                valueDecoder = new ServerValueDecoder(typesTranslator(),
                                                      messenger.getEncoding());
            PostgresType[] parameterTypes = null;

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        int maxrows = messenger.readInt();
        logger.debug("Execute: {}", portalName);
        PostgresBoundQueryContext context = boundPortals.get(portalName);
        if (context == null)
            throw new NoSuchCursorException(portalName);
        QueryBindings bindings = context.getBindings();
        PostgresPreparedStatement pstmt = context.getStatement();
        sessionMonitor.startStatement(pstmt.getSQL(), pstmt.getName(), startTime);
        int rowsProcessed = executeStatementWithAutoTxn(pstmt.getStatement(), context, bindings, maxrows);
        sessionMonitor.endStatement(rowsProcessed);
        logger.debug("Execute complete: {} rows", rowsProcessed);

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            throws IOException {
        PostgresPreparedStatement pstmt = preparedStatements.get(estmt.getName());
        if (pstmt == null)
            throw new NoSuchPreparedStatementException(estmt.getName());
        PostgresQueryContext context = new PostgresQueryContext(this);
        QueryBindings bindings = context.createBindings();
        estmt.setParameters(bindings);
        sessionMonitor.startStatement(pstmt.getSQL(), pstmt.getName());
        pstmt.getStatement().sendDescription(context, false, false);
        int nrows = executeStatementWithAutoTxn(pstmt.getStatement(), context, bindings, maxrows);
        sessionMonitor.endStatement(nrows);

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        if (!((PostgresCursorGenerator<?>)pstmt).canSuspend(this)) {
            throw new UnsupportedSQLException("DECLARE can only be used within a transaction", stmt);
        }
        PostgresBoundQueryContext bound =
            new PostgresBoundQueryContext(this, ppstmt, name, true, false);
        QueryBindings bindings = bound.createBindings();
        if (estmt != null) {
            estmt.setParameters(bindings);
        }
        bound.setBindings(bindings);
        PostgresBoundQueryContext prev;

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    @Override
    public int fetchStatement(String name, int count) throws IOException {
        PostgresBoundQueryContext bound = boundPortals.get(name);
        if (bound == null)
            throw new NoSuchCursorException(name);
        QueryBindings bindings = bound.getBindings();
        PostgresPreparedStatement pstmt = bound.getStatement();
        sessionMonitor.startStatement(pstmt.getSQL(), pstmt.getName());
        pstmt.getStatement().sendDescription(bound, false, false);
        int nrows = executeStatementWithAutoTxn(pstmt.getStatement(), bound, bindings, count);
        sessionMonitor.endStatement(nrows);

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        Schema schema = SchemaCache.globalSchema(ddl().getAIS(session()));
        StoreAdapter adapter = newStoreAdapter(schema);
        TestOperator inputOperator = new TestOperator(inputRows);


        QueryContext context = queryContext(adapter);
        QueryBindings bindings = context.createBindings();
        Cursor inputCursor = API.cursor(inputOperator, context, bindings);
        inputCursor.openTopLevel();


        API.Ordering ordering = API.ordering();
        for(int i = 0; i < fieldOrdering.length; ++i) {

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        RowType rowType = schema.tableRowType(table);
        API.Ordering ordering = API.ordering();
        ordering.append(ExpressionGenerators.field(rowType, 1), true);


        QueryContext context = queryContext(adapter);
        QueryBindings bindings = context.createBindings();
        Cursor inputCursor = API.cursor(
                API.groupScan_Default(table.getGroup()),
                context, bindings
        );

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    private void scanAndCheckIndex(IndexRowType type, Row... expectedRows) {
        Schema schema = SchemaCache.globalSchema(ddl().getAIS(session()));
        StoreAdapter adapter = newStoreAdapter(schema);
        QueryContext queryContext = new SimpleQueryContext(adapter);
        QueryBindings queryBindings = queryContext.createBindings();
        compareRows(
                expectedRows,
                API.cursor(
                        API.indexScan_Default(type, false, IndexKeyRange.unbounded(type)),
                        queryContext, queryBindings

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        Schema schema = SchemaCache.globalSchema(ddl().getAIS(session()));
        IndexRowType indexRowType = schema.indexRowType(index);


        StoreAdapter adapter = newStoreAdapter(schema);
        QueryContext queryContext = new SimpleQueryContext(adapter);
        QueryBindings queryBindings = queryContext.createBindings();
        compareRows(
                new Row[] {
                        testRow(indexRowType, "a", 110, 1, 10, 100),
                        testRow(indexRowType, "a", 111, 1, 10, 101),
                        testRow(indexRowType, "a", 122, 1, 11, 111),

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    protected void runOperatorPlan(Plan plan, Session session,
                                   RowData oldRow, RowData newRow) {
        QueryContext context = 
            new SimpleQueryContext(store.createAdapter(session, plan.schema),
                                   serviceManager);
        QueryBindings bindings = context.createBindings();
        if (plan.bindOldRow) {
            RowDataValueSource source = new RowDataValueSource();
            for (int i = 0; i < plan.ncols; i++) {
                source.bind(plan.referencedFields[i], oldRow);
                bindings.setValue(i, source);
            }
        }
        if (plan.bindNewRow) {
            RowDataValueSource source = new RowDataValueSource();
            for (int i = 0; i < plan.ncols; i++) {
                source.bind(plan.referencedFields[i], newRow);
                bindings.setValue(plan.referencedFields.length + i, source);
            }
        }
        else if (plan.bindValues != null) {
            for (int i = 0; i < plan.ncols; i++) {
                bindings.setValue(plan.bindValues.length + i, plan.bindValues[i]);
            }
        }
        plan.plannable.run(context, bindings);
    }

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