Examples with RelNodeCompiler com.hortonworks.streamline.streams.sql.compiler.RelNodeCompiler used on opensource projects

Example 1 with RelNodeCompiler

use of com.hortonworks.streamline.streams.sql.compiler.RelNodeCompiler in project streamline by hortonworks.

the class TestRelNodeCompiler method testFilter.

@Test
public void testFilter() throws Exception {
    String sql = "SELECT ID + 1 FROM FOO WHERE ID > 3";
    TestCompilerUtils.CalciteState state = TestCompilerUtils.sqlOverDummyTable(sql);
    JavaTypeFactory typeFactory = new JavaTypeFactoryImpl(RelDataTypeSystem.DEFAULT);
    LogicalProject project = (LogicalProject) state.tree();
    LogicalFilter filter = (LogicalFilter) project.getInput();
    try (StringWriter sw = new StringWriter();
        PrintWriter pw = new PrintWriter(sw)) {
        RelNodeCompiler compiler = new RelNodeCompiler(pw, typeFactory);
        // standalone mode doesn't use inputstreams argument
        compiler.visitFilter(filter, Collections.EMPTY_LIST);
        pw.flush();
        Assert.assertThat(sw.toString(), containsString("> 3"));
    }
    try (StringWriter sw = new StringWriter();
        PrintWriter pw = new PrintWriter(sw)) {
        RelNodeCompiler compiler = new RelNodeCompiler(pw, typeFactory);
        // standalone mode doesn't use inputstreams argument
        compiler.visitProject(project, Collections.EMPTY_LIST);
        pw.flush();
        Assert.assertThat(sw.toString(), containsString(" + 1"));
    }
}