How to use

com.facebook.presto.sql.tree.ExplainFormat

constructor

@Override
public Node visitExplainFormat(SqlBaseParser.ExplainFormatContext context)
{
  switch (context.value.getType()) {
    case SqlBaseLexer.GRAPHVIZ:
      return new ExplainFormat(getLocation(context), ExplainFormat.Type.GRAPHVIZ);
    case SqlBaseLexer.TEXT:
      return new ExplainFormat(getLocation(context), ExplainFormat.Type.TEXT);
    case SqlBaseLexer.JSON:
      return new ExplainFormat(getLocation(context), ExplainFormat.Type.JSON);
  }
  throw new IllegalArgumentException("Unsupported EXPLAIN format: " + context.value.getText());
}

@Test
public void testExplain()
{
  assertStatement("EXPLAIN SELECT * FROM t",
      new Explain(simpleQuery(selectList(new AllColumns()), table(QualifiedName.of("t"))), false, false, ImmutableList.of()));
  assertStatement("EXPLAIN (TYPE LOGICAL) SELECT * FROM t",
      new Explain(
          simpleQuery(selectList(new AllColumns()), table(QualifiedName.of("t"))),
          false,
          false,
          ImmutableList.of(new ExplainType(ExplainType.Type.LOGICAL))));
  assertStatement("EXPLAIN (TYPE LOGICAL, FORMAT TEXT) SELECT * FROM t",
      new Explain(
          simpleQuery(selectList(new AllColumns()), table(QualifiedName.of("t"))),
          false,
          false,
          ImmutableList.of(
              new ExplainType(ExplainType.Type.LOGICAL),
              new ExplainFormat(ExplainFormat.Type.TEXT))));
}

@Override
public Node visitExplainFormat(SqlBaseParser.ExplainFormatContext context)
{
  switch (context.value.getType()) {
    case SqlBaseLexer.GRAPHVIZ:
      return new ExplainFormat(getLocation(context), ExplainFormat.Type.GRAPHVIZ);
    case SqlBaseLexer.TEXT:
      return new ExplainFormat(getLocation(context), ExplainFormat.Type.TEXT);
    case SqlBaseLexer.JSON:
      return new ExplainFormat(getLocation(context), ExplainFormat.Type.JSON);
  }
  throw new IllegalArgumentException("Unsupported EXPLAIN format: " + context.value.getText());
}

@Override
public Node visitExplainFormat(SqlBaseParser.ExplainFormatContext context)
{
  switch (context.value.getType()) {
    case SqlBaseLexer.GRAPHVIZ:
      return new ExplainFormat(getLocation(context), ExplainFormat.Type.GRAPHVIZ);
    case SqlBaseLexer.TEXT:
      return new ExplainFormat(getLocation(context), ExplainFormat.Type.TEXT);
  }
  throw new IllegalArgumentException("Unsupported EXPLAIN format: " + context.value.getText());
}

@Test
public void testExplain()
    throws Exception
{
  assertStatement("EXPLAIN SELECT * FROM t",
      new Explain(simpleQuery(selectList(new AllColumns()), table(QualifiedName.of("t"))), false, ImmutableList.of()));
  assertStatement("EXPLAIN (TYPE LOGICAL) SELECT * FROM t",
      new Explain(
          simpleQuery(selectList(new AllColumns()), table(QualifiedName.of("t"))),
          false,
          ImmutableList.of(new ExplainType(ExplainType.Type.LOGICAL))));
  assertStatement("EXPLAIN (TYPE LOGICAL, FORMAT TEXT) SELECT * FROM t",
      new Explain(
          simpleQuery(selectList(new AllColumns()), table(QualifiedName.of("t"))),
          false,
          ImmutableList.of(
              new ExplainType(ExplainType.Type.LOGICAL),
              new ExplainFormat(ExplainFormat.Type.TEXT))));
}

@Test
public void testExplain()
{
  assertStatement("EXPLAIN SELECT * FROM t",
      new Explain(simpleQuery(selectList(new AllColumns()), table(QualifiedName.of("t"))), false, false, ImmutableList.of()));
  assertStatement("EXPLAIN (TYPE LOGICAL) SELECT * FROM t",
      new Explain(
          simpleQuery(selectList(new AllColumns()), table(QualifiedName.of("t"))),
          false,
          false,
          ImmutableList.of(new ExplainType(ExplainType.Type.LOGICAL))));
  assertStatement("EXPLAIN (TYPE LOGICAL, FORMAT TEXT) SELECT * FROM t",
      new Explain(
          simpleQuery(selectList(new AllColumns()), table(QualifiedName.of("t"))),
          false,
          false,
          ImmutableList.of(
              new ExplainType(ExplainType.Type.LOGICAL),
              new ExplainFormat(ExplainFormat.Type.TEXT))));
}