Examples with ParameterNode org.hibernate.hql.internal.ast.tree.ParameterNode used on opensource projects

Example 1 with ParameterNode

use of org.hibernate.hql.internal.ast.tree.ParameterNode in project hibernate-orm by hibernate.

the class HqlSqlWalker method prepareFromClauseInputTree.

@Override
protected void prepareFromClauseInputTree(AST fromClauseInput) {
    if (!isSubQuery()) {
        if (isFilter()) {
            // Handle collection-filter compilation.
            // IMPORTANT NOTE: This is modifying the INPUT (HQL) tree, not the output tree!
            QueryableCollection persister = sessionFactoryHelper.getCollectionPersister(collectionFilterRole);
            Type collectionElementType = persister.getElementType();
            if (!collectionElementType.isEntityType()) {
                throw new QueryException("collection of values in filter: this");
            }
            String collectionElementEntityName = persister.getElementPersister().getEntityName();
            ASTFactory inputAstFactory = hqlParser.getASTFactory();
            AST fromElement = inputAstFactory.create(HqlTokenTypes.FILTER_ENTITY, collectionElementEntityName);
            ASTUtil.createSibling(inputAstFactory, HqlTokenTypes.ALIAS, "this", fromElement);
            fromClauseInput.addChild(fromElement);
            // Show the modified AST.
            LOG.debug("prepareFromClauseInputTree() : Filter - Added 'this' as a from element...");
            queryTranslatorImpl.showHqlAst(hqlParser.getAST());
            // Create a parameter specification for the collection filter...
            final Type collectionFilterKeyType = sessionFactoryHelper.requireQueryableCollection(collectionFilterRole).getKeyType();
            final ParameterNode collectionFilterKeyParameter = (ParameterNode) astFactory.create(PARAM, "?");
            final CollectionFilterKeyParameterSpecification collectionFilterKeyParameterSpec = new CollectionFilterKeyParameterSpecification(collectionFilterRole, collectionFilterKeyType);
            parameterCount++;
            collectionFilterKeyParameter.setHqlParameterSpecification(collectionFilterKeyParameterSpec);
            parameterSpecs.add(collectionFilterKeyParameterSpec);
        }
    }
}

Example 2 with ParameterNode

use of org.hibernate.hql.internal.ast.tree.ParameterNode in project hibernate-orm by hibernate.

the class HqlSqlWalker method postProcessInsert.

@Override
protected void postProcessInsert(AST insert) throws SemanticException, QueryException {
    InsertStatement insertStatement = (InsertStatement) insert;
    insertStatement.validate();
    SelectClause selectClause = insertStatement.getSelectClause();
    Queryable persister = insertStatement.getIntoClause().getQueryable();
    if (!insertStatement.getIntoClause().isExplicitIdInsertion()) {
        // the insert did not explicitly reference the id.  See if
        // 1) that is allowed
        // 2) whether we need to alter the SQL tree to account for id
        final IdentifierGenerator generator = persister.getIdentifierGenerator();
        if (!BulkInsertionCapableIdentifierGenerator.class.isInstance(generator)) {
            throw new QueryException("Invalid identifier generator encountered for implicit id handling as part of bulk insertions");
        }
        final BulkInsertionCapableIdentifierGenerator capableGenerator = BulkInsertionCapableIdentifierGenerator.class.cast(generator);
        if (!capableGenerator.supportsBulkInsertionIdentifierGeneration()) {
            throw new QueryException("Identifier generator reported it does not support implicit id handling as part of bulk insertions");
        }
        final String fragment = capableGenerator.determineBulkInsertionIdentifierGenerationSelectFragment(sessionFactoryHelper.getFactory().getDialect());
        if (fragment != null) {
            // we got a fragment from the generator, so alter the sql tree...
            // 
            // first, wrap the fragment as a node
            AST fragmentNode = getASTFactory().create(HqlSqlTokenTypes.SQL_TOKEN, fragment);
            // next, rearrange the SQL tree to add the fragment node as the first select expression
            AST originalFirstSelectExprNode = selectClause.getFirstChild();
            selectClause.setFirstChild(fragmentNode);
            fragmentNode.setNextSibling(originalFirstSelectExprNode);
            // finally, prepend the id column name(s) to the insert-spec
            insertStatement.getIntoClause().prependIdColumnSpec();
        }
    }
    if (sessionFactoryHelper.getFactory().getDialect().supportsParametersInInsertSelect()) {
        AST child = selectClause.getFirstChild();
        int i = 0;
        while (child != null) {
            if (child instanceof ParameterNode) {
                // infer the parameter type from the type listed in the INSERT INTO clause
                ((ParameterNode) child).setExpectedType(insertStatement.getIntoClause().getInsertionTypes()[selectClause.getParameterPositions().get(i)]);
                i++;
            }
            child = child.getNextSibling();
        }
    }
    final boolean includeVersionProperty = persister.isVersioned() && !insertStatement.getIntoClause().isExplicitVersionInsertion() && persister.isVersionPropertyInsertable();
    if (includeVersionProperty) {
        // We need to seed the version value as part of this bulk insert
        VersionType versionType = persister.getVersionType();
        AST versionValueNode = null;
        if (sessionFactoryHelper.getFactory().getDialect().supportsParametersInInsertSelect()) {
            int[] sqlTypes = versionType.sqlTypes(sessionFactoryHelper.getFactory());
            if (sqlTypes == null || sqlTypes.length == 0) {
                throw new IllegalStateException(versionType.getClass() + ".sqlTypes() returns null or empty array");
            }
            if (sqlTypes.length > 1) {
                throw new IllegalStateException(versionType.getClass() + ".sqlTypes() returns > 1 element; only single-valued versions are allowed.");
            }
            versionValueNode = getASTFactory().create(HqlSqlTokenTypes.PARAM, "?");
            ParameterSpecification paramSpec = new VersionTypeSeedParameterSpecification(versionType);
            ((ParameterNode) versionValueNode).setHqlParameterSpecification(paramSpec);
            parameterSpecs.add(0, paramSpec);
            if (sessionFactoryHelper.getFactory().getDialect().requiresCastingOfParametersInSelectClause()) {
                // we need to wrtap the param in a cast()
                MethodNode versionMethodNode = (MethodNode) getASTFactory().create(HqlSqlTokenTypes.METHOD_CALL, "(");
                AST methodIdentNode = getASTFactory().create(HqlSqlTokenTypes.IDENT, "cast");
                versionMethodNode.addChild(methodIdentNode);
                versionMethodNode.initializeMethodNode(methodIdentNode, true);
                AST castExprListNode = getASTFactory().create(HqlSqlTokenTypes.EXPR_LIST, "exprList");
                methodIdentNode.setNextSibling(castExprListNode);
                castExprListNode.addChild(versionValueNode);
                versionValueNode.setNextSibling(getASTFactory().create(HqlSqlTokenTypes.IDENT, sessionFactoryHelper.getFactory().getDialect().getTypeName(sqlTypes[0])));
                processFunction(versionMethodNode, true);
                versionValueNode = versionMethodNode;
            }
        } else {
            if (isIntegral(versionType)) {
                try {
                    Object seedValue = versionType.seed(null);
                    versionValueNode = getASTFactory().create(HqlSqlTokenTypes.SQL_TOKEN, seedValue.toString());
                } catch (Throwable t) {
                    throw new QueryException("could not determine seed value for version on bulk insert [" + versionType + "]");
                }
            } else if (isDatabaseGeneratedTimestamp(versionType)) {
                String functionName = sessionFactoryHelper.getFactory().getDialect().getCurrentTimestampSQLFunctionName();
                versionValueNode = getASTFactory().create(HqlSqlTokenTypes.SQL_TOKEN, functionName);
            } else {
                throw new QueryException("cannot handle version type [" + versionType + "] on bulk inserts with dialects not supporting parameterSpecs in insert-select statements");
            }
        }
        AST currentFirstSelectExprNode = selectClause.getFirstChild();
        selectClause.setFirstChild(versionValueNode);
        versionValueNode.setNextSibling(currentFirstSelectExprNode);
        insertStatement.getIntoClause().prependVersionColumnSpec();
    }
    if (insertStatement.getIntoClause().isDiscriminated()) {
        String sqlValue = insertStatement.getIntoClause().getQueryable().getDiscriminatorSQLValue();
        AST discrimValue = getASTFactory().create(HqlSqlTokenTypes.SQL_TOKEN, sqlValue);
        insertStatement.getSelectClause().addChild(discrimValue);
    }
}

Example 3 with ParameterNode

use of org.hibernate.hql.internal.ast.tree.ParameterNode in project hibernate-orm by hibernate.

the class HqlSqlWalker method generatePositionalParameter.

@Override
protected AST generatePositionalParameter(AST delimiterNode, AST numberNode) throws SemanticException {
    // todo : we check this multiple times
    if (getSessionFactoryHelper().isStrictJPAQLComplianceEnabled() && namedParameters != null) {
        throw new SemanticException("Cannot mix positional and named parameters: " + queryTranslatorImpl.getQueryString());
    }
    if (numberNode == null) {
        throw new QueryException(String.format(Locale.ROOT, ERROR_LEGACY_ORDINAL_PARAMS_NO_LONGER_SUPPORTED, queryTranslatorImpl.getQueryString()));
    }
    final String positionString = numberNode.getText();
    final int label = Integer.parseInt(positionString);
    trackPositionalParameterPositions(label);
    final ParameterNode parameter = (ParameterNode) astFactory.create(PARAM, positionString);
    parameter.setText("?");
    final int queryParamtersPosition = isFilter() ? label : label - 1;
    final PositionalParameterSpecification paramSpec = new PositionalParameterSpecification(delimiterNode.getLine(), delimiterNode.getColumn(), label, queryParamtersPosition);
    parameter.setHqlParameterSpecification(paramSpec);
    parameterSpecs.add(paramSpec);
    return parameter;
}

Example 4 with ParameterNode

use of org.hibernate.hql.internal.ast.tree.ParameterNode in project hibernate-orm by hibernate.

the class HqlSqlWalker method generateNamedParameter.

@Override
protected AST generateNamedParameter(AST delimiterNode, AST nameNode) throws SemanticException {
    if (getSessionFactoryHelper().isStrictJPAQLComplianceEnabled() && positionalParameters != null) {
        throw new SemanticException("Cannot mix positional and named parameters: " + queryTranslatorImpl.getQueryString());
    }
    final String name = nameNode.getText();
    trackNamedParameterPositions(name);
    // create the node initially with the param name so that it shows
    // appropriately in the "original text" attribute
    final ParameterNode parameter = (ParameterNode) astFactory.create(NAMED_PARAM, name);
    parameter.setText("?");
    final NamedParameterSpecification paramSpec = new NamedParameterSpecification(delimiterNode.getLine(), delimiterNode.getColumn(), name);
    parameter.setHqlParameterSpecification(paramSpec);
    parameterSpecs.add(paramSpec);
    return parameter;
}

Example 5 with ParameterNode

use of org.hibernate.hql.internal.ast.tree.ParameterNode in project hibernate-orm by hibernate.

the class HqlSqlWalker method prepareVersioned.

@Override
protected void prepareVersioned(AST updateNode, AST versioned) throws SemanticException {
    UpdateStatement updateStatement = (UpdateStatement) updateNode;
    FromClause fromClause = updateStatement.getFromClause();
    if (versioned != null) {
        // Make sure that the persister is versioned
        Queryable persister = fromClause.getFromElement().getQueryable();
        if (!persister.isVersioned()) {
            throw new SemanticException("increment option specified for update of non-versioned entity");
        }
        VersionType versionType = persister.getVersionType();
        if (versionType instanceof UserVersionType) {
            throw new SemanticException("user-defined version types not supported for increment option");
        }
        AST eq = getASTFactory().create(HqlSqlTokenTypes.EQ, "=");
        AST versionPropertyNode = generateVersionPropertyNode(persister);
        eq.setFirstChild(versionPropertyNode);
        AST versionIncrementNode = null;
        if (isTimestampBasedVersion(versionType)) {
            versionIncrementNode = getASTFactory().create(HqlSqlTokenTypes.PARAM, "?");
            ParameterSpecification paramSpec = new VersionTypeSeedParameterSpecification(versionType);
            ((ParameterNode) versionIncrementNode).setHqlParameterSpecification(paramSpec);
            parameterSpecs.add(0, paramSpec);
        } else {
            // Not possible to simply re-use the versionPropertyNode here as it causes
            // OOM errors due to circularity :(
            versionIncrementNode = getASTFactory().create(HqlSqlTokenTypes.PLUS, "+");
            versionIncrementNode.setFirstChild(generateVersionPropertyNode(persister));
            versionIncrementNode.addChild(getASTFactory().create(HqlSqlTokenTypes.IDENT, "1"));
        }
        eq.addChild(versionIncrementNode);
        evaluateAssignment(eq, persister, 0);
        AST setClause = updateStatement.getSetClause();
        AST currentFirstSetElement = setClause.getFirstChild();
        setClause.setFirstChild(eq);
        eq.setNextSibling(currentFirstSetElement);
    }
}