Examples with RelDataTypeField org.apache.calcite.rel.type.RelDataTypeField used on opensource projects

Example 21 with RelDataTypeField

use of org.apache.calcite.rel.type.RelDataTypeField in project calcite by apache.

the class ElasticsearchSort method implement.

@Override
public void implement(Implementor implementor) {
    implementor.visitChild(0, getInput());
    if (!collation.getFieldCollations().isEmpty()) {
        final List<String> keys = new ArrayList<>();
        if (input instanceof Project) {
            final List<RexNode> projects = ((Project) input).getProjects();
            for (RelFieldCollation fieldCollation : collation.getFieldCollations()) {
                RexNode project = projects.get(fieldCollation.getFieldIndex());
                String name = project.accept(MapProjectionFieldVisitor.INSTANCE);
                keys.add(ElasticsearchRules.quote(name) + ": " + direction(fieldCollation));
            }
        } else {
            final List<RelDataTypeField> fields = getRowType().getFieldList();
            for (RelFieldCollation fieldCollation : collation.getFieldCollations()) {
                final String name = fields.get(fieldCollation.getFieldIndex()).getName();
                keys.add(ElasticsearchRules.quote(name) + ": " + direction(fieldCollation));
            }
        }
        implementor.add("\"sort\": [ " + Util.toString(keys, "{", "}, {", "}") + "]");
    }
    if (offset != null) {
        implementor.add("\"from\": " + ((RexLiteral) offset).getValue());
    }
    if (fetch != null) {
        implementor.add("\"size\": " + ((RexLiteral) fetch).getValue());
    }
}

Example 22 with RelDataTypeField

use of org.apache.calcite.rel.type.RelDataTypeField in project calcite by apache.

the class TableScanNode method createEnumerable.

private static TableScanNode createEnumerable(Compiler compiler, TableScan rel, Enumerable<Row> enumerable, final ImmutableIntList acceptedProjects, List<RexNode> rejectedFilters, final ImmutableIntList rejectedProjects) {
    if (!rejectedFilters.isEmpty()) {
        final RexNode filter = RexUtil.composeConjunction(rel.getCluster().getRexBuilder(), rejectedFilters, false);
        assert filter != null;
        // Re-map filter for the projects that have been applied already
        final RexNode filter2;
        final RelDataType inputRowType;
        if (acceptedProjects == null) {
            filter2 = filter;
            inputRowType = rel.getRowType();
        } else {
            final Mapping mapping = Mappings.target(acceptedProjects, rel.getTable().getRowType().getFieldCount());
            filter2 = RexUtil.apply(mapping, filter);
            final RelDataTypeFactory.Builder builder = rel.getCluster().getTypeFactory().builder();
            final List<RelDataTypeField> fieldList = rel.getTable().getRowType().getFieldList();
            for (int acceptedProject : acceptedProjects) {
                builder.add(fieldList.get(acceptedProject));
            }
            inputRowType = builder.build();
        }
        final Scalar condition = compiler.compile(ImmutableList.of(filter2), inputRowType);
        final Context context = compiler.createContext();
        enumerable = enumerable.where(new Predicate1<Row>() {

            @Override
            public boolean apply(Row row) {
                context.values = row.getValues();
                Boolean b = (Boolean) condition.execute(context);
                return b != null && b;
            }
        });
    }
    if (rejectedProjects != null) {
        enumerable = enumerable.select(new Function1<Row, Row>() {

            final Object[] values = new Object[rejectedProjects.size()];

            @Override
            public Row apply(Row row) {
                final Object[] inValues = row.getValues();
                for (int i = 0; i < rejectedProjects.size(); i++) {
                    values[i] = inValues[rejectedProjects.get(i)];
                }
                return Row.asCopy(values);
            }
        });
    }
    return new TableScanNode(compiler, rel, enumerable);
}

Example 23 with RelDataTypeField

use of org.apache.calcite.rel.type.RelDataTypeField in project calcite by apache.

the class CalciteMetaImpl method columns.

public Enumerable<MetaColumn> columns(final MetaTable table_) {
    final CalciteMetaTable table = (CalciteMetaTable) table_;
    final RelDataType rowType = table.calciteTable.getRowType(getConnection().typeFactory);
    return Linq4j.asEnumerable(rowType.getFieldList()).select(new Function1<RelDataTypeField, MetaColumn>() {

        public MetaColumn apply(RelDataTypeField field) {
            final int precision = field.getType().getSqlTypeName().allowsPrec() && !(field.getType() instanceof RelDataTypeFactoryImpl.JavaType) ? field.getType().getPrecision() : -1;
            return new MetaColumn(table.tableCat, table.tableSchem, table.tableName, field.getName(), field.getType().getSqlTypeName().getJdbcOrdinal(), field.getType().getFullTypeString(), precision, field.getType().getSqlTypeName().allowsScale() ? field.getType().getScale() : null, 10, field.getType().isNullable() ? DatabaseMetaData.columnNullable : DatabaseMetaData.columnNoNulls, precision, field.getIndex() + 1, field.getType().isNullable() ? "YES" : "NO");
        }
    });
}

Example 24 with RelDataTypeField

use of org.apache.calcite.rel.type.RelDataTypeField in project calcite by apache.

the class RelMdSize method averageColumnSizes.

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 25 with RelDataTypeField

use of org.apache.calcite.rel.type.RelDataTypeField in project calcite by apache.

the class RelMdSize method averageColumnSizes.

public List<Double> averageColumnSizes(TableScan rel, RelMetadataQuery mq) {
    final List<RelDataTypeField> fields = rel.getRowType().getFieldList();
    final ImmutableList.Builder<Double> list = ImmutableList.builder();
    for (RelDataTypeField field : fields) {
        list.add(averageTypeValueSize(field.getType()));
    }
    return list.build();
}