Package org.apache.metamodel.jdbc.dialects

Examples of org.apache.metamodel.jdbc.dialects.AbstractQueryRewriter


                .having(new FilterItem(new SelectItem(new MutableColumn("col2")), OperatorType.GREATER_THAN, 40))
                .orderBy(new MutableColumn("bla"));
        assertEquals("SELECT COUNT(*) FROM foobar WHERE foob IS NULL GROUP BY col1 HAVING col2 > 40 ORDER BY bla ASC",
                q.toString());

        AbstractQueryRewriter rewriter = new DefaultQueryRewriter(null) {

        };

        assertEquals("SELECT COUNT(*) FROM foobar WHERE foob IS NULL GROUP BY col1 HAVING col2 > 40 ORDER BY bla ASC",
                rewriter.rewriteQuery(q));

        rewriter = new DefaultQueryRewriter(null) {
            @Override
            protected String rewriteFromItem(Query query, FromItem item) {
                return "mytable";
            }
        };

        assertEquals("SELECT COUNT(*) FROM mytable WHERE foob IS NULL GROUP BY col1 HAVING col2 > 40 ORDER BY bla ASC",
                rewriter.rewriteQuery(q));

        q.getSelectClause().setDistinct(true);

        assertEquals(
                "SELECT DISTINCT COUNT(*) FROM mytable WHERE foob IS NULL GROUP BY col1 HAVING col2 > 40 ORDER BY bla ASC",
                rewriter.rewriteQuery(q));
    }
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