Examples with ValuesOp herddb.model.planner.ValuesOp used on opensource projects

Example 1 with ValuesOp

use of herddb.model.planner.ValuesOp in project herddb by diennea.

the class CalcitePlanner method planValues.

private PlannerOp planValues(EnumerableValues op) {
    List<List<CompiledSQLExpression>> tuples = new ArrayList<>(op.getTuples().size());
    RelDataType rowType = op.getRowType();
    List<RelDataTypeField> fieldList = rowType.getFieldList();
    Column[] columns = new Column[fieldList.size()];
    for (ImmutableList<RexLiteral> tuple : op.getTuples()) {
        List<CompiledSQLExpression> row = new ArrayList<>(tuple.size());
        for (RexLiteral node : tuple) {
            CompiledSQLExpression exp = SQLExpressionCompiler.compileExpression(node);
            row.add(exp);
        }
        tuples.add(row);
    }
    int i = 0;
    String[] fieldNames = new String[fieldList.size()];
    for (RelDataTypeField field : fieldList) {
        Column col = Column.column(field.getName(), convertToHerdType(field.getType()));
        fieldNames[i] = field.getName();
        columns[i++] = col;
    }
    return new ValuesOp(manager.getNodeId(), fieldNames, columns, tuples);
}

Example 2 with ValuesOp

use of herddb.model.planner.ValuesOp in project herddb by diennea.

the class CalcitePlanner method translate.

@Override
public TranslatedQuery translate(String defaultTableSpace, String query, List<Object> parameters, boolean scan, boolean allowCache, boolean returnValues, int maxRows) throws StatementExecutionException {
    query = SQLPlanner.rewriteExecuteSyntax(query);
    if (query.startsWith("EXECUTE") || query.startsWith("CREATE") || query.startsWith("DROP") || query.startsWith("ALTER") || query.startsWith("TRUNCATE")) {
        return fallback.translate(defaultTableSpace, query, parameters, scan, allowCache, returnValues, maxRows);
    }
    if (parameters == null) {
        parameters = Collections.emptyList();
    }
    String cacheKey = "scan:" + scan + ",defaultTableSpace:" + defaultTableSpace + ",query:" + query + ",returnValues:" + returnValues + ",maxRows:" + maxRows;
    if (allowCache) {
        ExecutionPlan cached = cache.get(cacheKey);
        if (cached != null) {
            return new TranslatedQuery(cached, new SQLStatementEvaluationContext(query, parameters));
        }
    }
    if (!isCachable(query)) {
        allowCache = false;
    }
    try {
        if (query.startsWith("EXPLAIN ")) {
            query = query.substring("EXPLAIN ".length());
            PlannerResult plan = runPlanner(defaultTableSpace, query);
            PlannerOp finalPlan = convertRelNode(plan.topNode, plan.originalRowType, returnValues).optimize();
            ValuesOp values = new ValuesOp(manager.getNodeId(), new String[] { "name", "value" }, new Column[] { column("name", ColumnTypes.STRING), column("value", ColumnTypes.STRING) }, java.util.Arrays.asList(java.util.Arrays.asList(new ConstantExpression("query"), new ConstantExpression(query)), java.util.Arrays.asList(new ConstantExpression("logicalplan"), new ConstantExpression(RelOptUtil.dumpPlan("", plan.logicalPlan, SqlExplainFormat.TEXT, SqlExplainLevel.ALL_ATTRIBUTES))), java.util.Arrays.asList(new ConstantExpression("plan"), new ConstantExpression(RelOptUtil.dumpPlan("", plan.topNode, SqlExplainFormat.TEXT, SqlExplainLevel.ALL_ATTRIBUTES))), java.util.Arrays.asList(new ConstantExpression("finalplan"), new ConstantExpression(finalPlan + ""))));
            ExecutionPlan executionPlan = ExecutionPlan.simple(new SQLPlannedOperationStatement(values));
            return new TranslatedQuery(executionPlan, new SQLStatementEvaluationContext(query, parameters));
        }
        PlannerResult plan = runPlanner(defaultTableSpace, query);
        SQLPlannedOperationStatement sqlPlannedOperationStatement = new SQLPlannedOperationStatement(convertRelNode(plan.topNode, plan.originalRowType, returnValues).optimize());
        if (LOG.isLoggable(Level.FINE)) {
            LOG.log(Level.FINE, "Query: {0} --HerdDB Plan {1}", new Object[] { query, sqlPlannedOperationStatement.getRootOp() });
        }
        if (!scan) {
            ScanStatement scanStatement = sqlPlannedOperationStatement.unwrap(ScanStatement.class);
            if (scanStatement != null) {
                Table tableDef = scanStatement.getTableDef();
                CompiledSQLExpression where = scanStatement.getPredicate().unwrap(CompiledSQLExpression.class);
                SQLRecordKeyFunction keyFunction = findIndexAccess(where, tableDef.getPrimaryKey(), tableDef, "=", tableDef);
                if (keyFunction == null || !keyFunction.isFullPrimaryKey()) {
                    throw new StatementExecutionException("unsupported GET not on PK, bad where clause: " + query);
                }
                GetStatement get = new GetStatement(scanStatement.getTableSpace(), scanStatement.getTable(), keyFunction, scanStatement.getPredicate(), true);
                ExecutionPlan executionPlan = ExecutionPlan.simple(get);
                if (allowCache) {
                    cache.put(cacheKey, executionPlan);
                }
                return new TranslatedQuery(executionPlan, new SQLStatementEvaluationContext(query, parameters));
            }
        }
        if (maxRows > 0) {
            PlannerOp op = new LimitOp(sqlPlannedOperationStatement.getRootOp(), new ConstantExpression(maxRows), new ConstantExpression(0)).optimize();
            sqlPlannedOperationStatement = new SQLPlannedOperationStatement(op);
        }
        ExecutionPlan executionPlan = ExecutionPlan.simple(sqlPlannedOperationStatement);
        if (allowCache) {
            cache.put(cacheKey, executionPlan);
        }
        return new TranslatedQuery(executionPlan, new SQLStatementEvaluationContext(query, parameters));
    } catch (CalciteContextException ex) {
        LOG.log(Level.INFO, "Error while parsing '" + ex.getOriginalStatement() + "'", ex);
        // TODO can this be done better ?
        throw new StatementExecutionException(ex.getMessage());
    } catch (RelConversionException | ValidationException | SqlParseException ex) {
        LOG.log(Level.INFO, "Error while parsing '" + query + "'", ex);
        // TODO can this be done better ?
        throw new StatementExecutionException(ex.getMessage().replace("org.apache.calcite.runtime.CalciteContextException: ", ""));
    } catch (MetadataStorageManagerException ex) {
        LOG.log(Level.INFO, "Error while parsing '" + query + "'", ex);
        throw new StatementExecutionException(ex);
    }
}