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

Example 36 with RelDataTypeField

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

the class MockCatalogReader method deduceMonotonicity.

private static List<RelCollation> deduceMonotonicity(Prepare.PreparingTable table) {
    final List<RelCollation> collationList = Lists.newArrayList();
    // Deduce which fields the table is sorted on.
    int i = -1;
    for (RelDataTypeField field : table.getRowType().getFieldList()) {
        ++i;
        final SqlMonotonicity monotonicity = table.getMonotonicity(field.getName());
        if (monotonicity != SqlMonotonicity.NOT_MONOTONIC) {
            final RelFieldCollation.Direction direction = monotonicity.isDecreasing() ? RelFieldCollation.Direction.DESCENDING : RelFieldCollation.Direction.ASCENDING;
            collationList.add(RelCollations.of(new RelFieldCollation(i, direction)));
        }
    }
    return collationList;
}

Example 37 with RelDataTypeField

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

the class RelBuilderTest method testAlias.

@Test
public void testAlias() {
    // Equivalent SQL:
    // SELECT *
    // FROM emp AS e, dept
    // WHERE e.deptno = dept.deptno
    final RelBuilder builder = RelBuilder.create(config().build());
    RelNode root = builder.scan("EMP").as("e").scan("DEPT").join(JoinRelType.LEFT).filter(builder.equals(builder.field("e", "DEPTNO"), builder.field("DEPT", "DEPTNO"))).project(builder.field("e", "ENAME"), builder.field("DEPT", "DNAME")).build();
    final String expected = "LogicalProject(ENAME=[$1], DNAME=[$9])\n" + "  LogicalFilter(condition=[=($7, $8)])\n" + "    LogicalJoin(condition=[true], joinType=[left])\n" + "      LogicalTableScan(table=[[scott, EMP]])\n" + "      LogicalTableScan(table=[[scott, DEPT]])\n";
    assertThat(root, hasTree(expected));
    final RelDataTypeField field = root.getRowType().getFieldList().get(1);
    assertThat(field.getName(), is("DNAME"));
    assertThat(field.getType().isNullable(), is(true));
}

Example 38 with RelDataTypeField

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

the class SqlTesterImpl method getColumnType.

public RelDataType getColumnType(String sql) {
    RelDataType rowType = getResultType(sql);
    final List<RelDataTypeField> fields = rowType.getFieldList();
    assertEquals("expected query to return 1 field", 1, fields.size());
    return fields.get(0).getType();
}

Example 39 with RelDataTypeField

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

the class GeodeUtils method handleJavaObjectEntry.

private static Object handleJavaObjectEntry(List<RelDataTypeField> relDataTypeFields, Object obj) {
    Class<?> clazz = obj.getClass();
    if (relDataTypeFields.size() == 1) {
        try {
            Field javaField = clazz.getDeclaredField(relDataTypeFields.get(0).getName());
            javaField.setAccessible(true);
            return javaField.get(obj);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
    Object[] values = new Object[relDataTypeFields.size()];
    int index = 0;
    for (RelDataTypeField relDataTypeField : relDataTypeFields) {
        try {
            Field javaField = clazz.getDeclaredField(relDataTypeField.getName());
            javaField.setAccessible(true);
            values[index++] = javaField.get(obj);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    return values;
}

Example 40 with RelDataTypeField

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

the class GeodeUtils method handleStructEntry.

private static Object handleStructEntry(List<RelDataTypeField> relDataTypeFields, Object obj) {
    Struct struct = (Struct) obj;
    Object[] values = new Object[relDataTypeFields.size()];
    int index = 0;
    for (RelDataTypeField relDataTypeField : relDataTypeFields) {
        Type javaType = JAVA_TYPE_FACTORY.getJavaClass(relDataTypeField.getType());
        Object rawValue;
        try {
            rawValue = struct.get(relDataTypeField.getName());
        } catch (IllegalArgumentException e) {
            rawValue = "<error>";
            System.err.println("Could find field : " + relDataTypeField.getName());
            e.printStackTrace();
        }
        values[index++] = convert(rawValue, (Class) javaType);
    }
    if (values.length == 1) {
        return values[0];
    }
    return values;
}