Examples with SelfRenderingExpression org.hibernate.sql.ast.tree.expression.SelfRenderingExpression used on opensource projects

Example 1 with SelfRenderingExpression

use of org.hibernate.sql.ast.tree.expression.SelfRenderingExpression in project hibernate-orm by hibernate.

the class AnsiTrimEmulationFunctionTest method render.

private String render(Dialect dialect, TrimFunction function, TrimSpec trimSpec, char trimCharacter, String trimSource) {
    SessionFactoryImplementor factory = Mockito.mock(SessionFactoryImplementor.class);
    JdbcServices jdbcServices = Mockito.mock(JdbcServices.class);
    Mockito.doReturn(jdbcServices).when(factory).getJdbcServices();
    Mockito.doReturn(dialect).when(jdbcServices).getDialect();
    StandardSqlAstTranslator<JdbcOperation> walker = new StandardSqlAstTranslator<>(factory, null);
    List<SqlAstNode> sqlAstArguments = new ArrayList<>();
    sqlAstArguments.add(new TrimSpecification(trimSpec));
    sqlAstArguments.add(new QueryLiteral<>(trimCharacter, new BasicTypeImpl<>(CharacterJavaType.INSTANCE, CharJdbcType.INSTANCE)));
    sqlAstArguments.add(new SelfRenderingExpression() {

        @Override
        public void renderToSql(SqlAppender sqlAppender, SqlAstTranslator<?> walker, SessionFactoryImplementor sessionFactory) {
            sqlAppender.appendSql(trimSource);
        }

        @Override
        public JdbcMappingContainer getExpressionType() {
            return null;
        }
    });
    function.render(walker, sqlAstArguments, walker);
    return walker.getSql();
}

Example 2 with SelfRenderingExpression

use of org.hibernate.sql.ast.tree.expression.SelfRenderingExpression in project hibernate-orm by hibernate.

the class CaseStatementDiscriminatorMappingImpl method createCaseSearchedExpression.

private Expression createCaseSearchedExpression(TableGroup entityTableGroup) {
    return new SelfRenderingExpression() {

        CaseSearchedExpression caseSearchedExpression;

        @Override
        public void renderToSql(SqlAppender sqlAppender, SqlAstTranslator<?> walker, SessionFactoryImplementor sessionFactory) {
            if (caseSearchedExpression == null) {
                // todo (6.0): possible optimization is to omit cases for table reference joins, that touch a super class, where a subclass is inner joined due to pruning
                caseSearchedExpression = new CaseSearchedExpression(CaseStatementDiscriminatorMappingImpl.this);
                tableDiscriminatorDetailsMap.forEach((tableName, tableDiscriminatorDetails) -> {
                    final TableReference tableReference = entityTableGroup.getTableReference(entityTableGroup.getNavigablePath(), tableName, false, false);
                    if (tableReference == null) {
                        // assume this is because it is a table that is not part of the processing entity's sub-hierarchy
                        return;
                    }
                    final Predicate predicate = new NullnessPredicate(new ColumnReference(tableReference, tableDiscriminatorDetails.getCheckColumnName(), false, null, null, getJdbcMapping(), getSessionFactory()), true);
                    caseSearchedExpression.when(predicate, new QueryLiteral<>(tableDiscriminatorDetails.getDiscriminatorValue(), getUnderlyingJdbcMappingType()));
                });
            }
            caseSearchedExpression.accept(walker);
        }

        @Override
        public JdbcMappingContainer getExpressionType() {
            return CaseStatementDiscriminatorMappingImpl.this;
        }
    };
}