Examples with ParameterRewriter io.prestosql.sql.planner.ParameterRewriter used on opensource projects

Example 1 with ParameterRewriter

use of io.prestosql.sql.planner.ParameterRewriter in project hetu-core by openlookeng.

the class SessionPropertyManager method evaluatePropertyValue.

public static Object evaluatePropertyValue(Expression expression, Type expectedType, Session session, Metadata metadata, List<Expression> parameters) {
    Expression rewritten = ExpressionTreeRewriter.rewriteWith(new ParameterRewriter(parameters), expression);
    Object value = evaluateConstantExpression(rewritten, expectedType, metadata, session, parameters);
    // convert to object value type of SQL type
    BlockBuilder blockBuilder = expectedType.createBlockBuilder(null, 1);
    writeNativeValue(expectedType, blockBuilder, value);
    Object objectValue = expectedType.getObjectValue(session.toConnectorSession(), blockBuilder, 0);
    if (objectValue == null) {
        throw new PrestoException(INVALID_SESSION_PROPERTY, "Session property value must not be null");
    }
    return objectValue;
}

Example 2 with ParameterRewriter

use of io.prestosql.sql.planner.ParameterRewriter in project hetu-core by openlookeng.

the class AbstractPropertyManager method evaluatePropertyValue.

private Object evaluatePropertyValue(Expression expression, Type expectedType, Session session, Metadata metadata, List<Expression> parameters) {
    Expression rewritten = ExpressionTreeRewriter.rewriteWith(new ParameterRewriter(parameters), expression);
    Object value = evaluateConstantExpression(rewritten, expectedType, metadata, session, parameters);
    // convert to object value type of SQL type
    BlockBuilder blockBuilder = expectedType.createBlockBuilder(null, 1);
    writeNativeValue(expectedType, blockBuilder, value);
    Object objectValue = expectedType.getObjectValue(session.toConnectorSession(), blockBuilder, 0);
    if (objectValue == null) {
        throw new PrestoException(propertyError, format("Invalid null value for %s property", propertyType));
    }
    return objectValue;
}

Example 3 with ParameterRewriter

use of io.prestosql.sql.planner.ParameterRewriter in project hetu-core by openlookeng.

the class CallTask method execute.

@Override
public ListenableFuture<?> execute(Call call, TransactionManager transactionManager, Metadata metadata, AccessControl accessControl, QueryStateMachine stateMachine, List<Expression> parameters, HeuristicIndexerManager heuristicIndexerManager) {
    if (!transactionManager.isAutoCommit(stateMachine.getSession().getRequiredTransactionId())) {
        throw new PrestoException(NOT_SUPPORTED, "Procedures cannot be called within a transaction (use autocommit mode)");
    }
    Session session = stateMachine.getSession();
    QualifiedObjectName procedureName = createQualifiedObjectName(session, call, call.getName());
    CatalogName catalogName = metadata.getCatalogHandle(stateMachine.getSession(), procedureName.getCatalogName()).orElseThrow(() -> new SemanticException(MISSING_CATALOG, call, "Catalog %s does not exist", procedureName.getCatalogName()));
    Procedure procedure = metadata.getProcedureRegistry().resolve(catalogName, toSchemaTableName(procedureName));
    // map declared argument names to positions
    Map<String, Integer> positions = new HashMap<>();
    for (int i = 0; i < procedure.getArguments().size(); i++) {
        positions.put(procedure.getArguments().get(i).getName(), i);
    }
    // per specification, do not allow mixing argument types
    Predicate<CallArgument> hasName = argument -> argument.getName().isPresent();
    boolean anyNamed = call.getArguments().stream().anyMatch(hasName);
    boolean allNamed = call.getArguments().stream().allMatch(hasName);
    if (anyNamed && !allNamed) {
        throw new SemanticException(INVALID_PROCEDURE_ARGUMENTS, call, "Named and positional arguments cannot be mixed");
    }
    // get the argument names in call order
    Map<String, CallArgument> names = new LinkedHashMap<>();
    for (int i = 0; i < call.getArguments().size(); i++) {
        CallArgument argument = call.getArguments().get(i);
        if (argument.getName().isPresent()) {
            String name = argument.getName().get();
            if (names.put(name, argument) != null) {
                throw new SemanticException(INVALID_PROCEDURE_ARGUMENTS, argument, "Duplicate procedure argument: %s", name);
            }
            if (!positions.containsKey(name)) {
                throw new SemanticException(INVALID_PROCEDURE_ARGUMENTS, argument, "Unknown argument name: %s", name);
            }
        } else if (i < procedure.getArguments().size()) {
            names.put(procedure.getArguments().get(i).getName(), argument);
        } else {
            throw new SemanticException(INVALID_PROCEDURE_ARGUMENTS, call, "Too many arguments for procedure");
        }
    }
    // verify argument count
    if (names.size() < positions.size()) {
        throw new SemanticException(INVALID_PROCEDURE_ARGUMENTS, call, "Too few arguments for procedure");
    }
    // get argument values
    Object[] values = new Object[procedure.getArguments().size()];
    for (Entry<String, CallArgument> entry : names.entrySet()) {
        CallArgument callArgument = entry.getValue();
        int index = positions.get(entry.getKey());
        Argument argument = procedure.getArguments().get(index);
        Expression expression = ExpressionTreeRewriter.rewriteWith(new ParameterRewriter(parameters), callArgument.getValue());
        Type type;
        try {
            type = metadata.getType(argument.getType());
        } catch (TypeNotFoundException e) {
            throw new PrestoException(INVALID_PROCEDURE_DEFINITION, "Unknown procedure argument type: " + argument.getType());
        }
        Object value = evaluateConstantExpression(expression, type, metadata, session, parameters);
        values[index] = toTypeObjectValue(session, type, value);
    }
    // validate arguments
    MethodType methodType = procedure.getMethodHandle().type();
    for (int i = 0; i < procedure.getArguments().size(); i++) {
        if ((values[i] == null) && methodType.parameterType(i).isPrimitive()) {
            String name = procedure.getArguments().get(i).getName();
            throw new PrestoException(INVALID_PROCEDURE_ARGUMENT, "Procedure argument cannot be null: " + name);
        }
    }
    // insert session argument
    List<Object> arguments = new ArrayList<>();
    Iterator<Object> valuesIterator = asList(values).iterator();
    for (Class<?> type : methodType.parameterList()) {
        if (ConnectorSession.class.isAssignableFrom(type)) {
            arguments.add(session.toConnectorSession(catalogName));
        } else {
            arguments.add(valuesIterator.next());
        }
    }
    try {
        procedure.getMethodHandle().invokeWithArguments(arguments);
    } catch (Throwable t) {
        if (t instanceof InterruptedException) {
            Thread.currentThread().interrupt();
        }
        throwIfInstanceOf(t, PrestoException.class);
        throw new PrestoException(PROCEDURE_CALL_FAILED, t);
    }
    return immediateFuture(null);
}