Java Code Examples for org.apache.calcite.rel.core.Values#getTuples()
The following examples show how to use
org.apache.calcite.rel.core.Values#getTuples() .
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Example 1
Source File: RelMdSize.java From Bats with Apache License 2.0 | 6 votes |
public List<Double> averageColumnSizes(Values rel, RelMetadataQuery mq) { final List<RelDataTypeField> fields = rel.getRowType().getFieldList(); final ImmutableList.Builder<Double> list = ImmutableList.builder(); for (int i = 0; i < fields.size(); i++) { RelDataTypeField field = fields.get(i); double d; if (rel.getTuples().isEmpty()) { d = averageTypeValueSize(field.getType()); } else { d = 0; for (ImmutableList<RexLiteral> literals : rel.getTuples()) { d += typeValueSize(field.getType(), literals.get(i).getValueAs(Comparable.class)); } d /= rel.getTuples().size(); } list.add(d); } return list.build(); }
Example 2
Source File: RelMdSize.java From calcite with Apache License 2.0 | 6 votes |
public List<Double> averageColumnSizes(Values rel, RelMetadataQuery mq) { final List<RelDataTypeField> fields = rel.getRowType().getFieldList(); final ImmutableList.Builder<Double> list = ImmutableList.builder(); for (int i = 0; i < fields.size(); i++) { RelDataTypeField field = fields.get(i); double d; if (rel.getTuples().isEmpty()) { d = averageTypeValueSize(field.getType()); } else { d = 0; for (ImmutableList<RexLiteral> literals : rel.getTuples()) { d += typeValueSize(field.getType(), literals.get(i).getValueAs(Comparable.class)); } d /= rel.getTuples().size(); } list.add(d); } return list.build(); }
Example 3
Source File: RelToSqlConverter.java From quark with Apache License 2.0 | 5 votes |
public Result visitValues(Values e) { final List<String> fields = e.getRowType().getFieldNames(); final List<Clause> clauses = Collections.singletonList(Clause.SELECT); final Context context = new AliasContext(Collections.<Pair<String, RelDataType>>emptyList(), false); final List<SqlSelect> selects = new ArrayList<>(); for (List<RexLiteral> tuple : e.getTuples()) { final List<SqlNode> selectList = new ArrayList<>(); for (Pair<RexLiteral, String> literal : Pair.zip(tuple, fields)) { selectList.add( SqlStdOperatorTable.AS.createCall( POS, context.toSql(null, literal.left), new SqlIdentifier(literal.right, POS))); } selects.add( new SqlSelect(POS, SqlNodeList.EMPTY, new SqlNodeList(selectList, POS), null, null, null, null, null, null, null, null)); } SqlNode query = null; for (SqlSelect select : selects) { if (query == null) { query = select; } else { query = SqlStdOperatorTable.UNION_ALL.createCall(POS, query, select); } } return result(query, clauses, e); }
Example 4
Source File: DremioRelToSqlConverter.java From dremio-oss with Apache License 2.0 | 4 votes |
/** * @see #dispatch */ @Override public SqlImplementor.Result visit(Values e) { if (getDialect().getValuesDummyTable() == null) { return super.visit(e); } // TODO(DX-12875): Generate a multi-row VALUES clause to push to the source // instead of using UNION statements. final List<Clause> clauses = ImmutableList.of(Clause.SELECT); final Map<String, RelDataType> pairs = ImmutableMap.of(); final Context context = aliasContext(pairs, false); final SqlNode fromNode = new SqlIdentifier(getDialect().getValuesDummyTable(), SqlParserPos.ZERO); final List<String> fields = e.getRowType().getFieldNames(); final List<SqlSelect> selects = new ArrayList<>(); for (List<RexLiteral> tuple : e.getTuples()) { final List<SqlNode> selectList = new ArrayList<>(); for (Pair<RexLiteral, String> literal : Pair.zip(tuple, fields)) { selectList.add( SqlStdOperatorTable.AS.createCall( POS, context.toSql(null, literal.left), new SqlIdentifier(literal.right, POS))); } selects.add( new SqlSelect(POS, SqlNodeList.EMPTY, new SqlNodeList(selectList, POS), fromNode, null, null, null, null, null, null, null)); } SqlNode query = null; for (SqlSelect select : selects) { if (query == null) { query = select; } else { query = SqlStdOperatorTable.UNION_ALL.createCall(POS, query, select); } } return result(query, clauses, e, null, null); }
Example 5
Source File: JdbcRules.java From calcite with Apache License 2.0 | 4 votes |
@Override public RelNode convert(RelNode rel) { Values values = (Values) rel; return new JdbcValues(values.getCluster(), values.getRowType(), values.getTuples(), values.getTraitSet().replace(out)); }