Examples with RelOptCluster org.apache.calcite.plan.RelOptCluster used on opensource projects

Example 21 with RelOptCluster

use of org.apache.calcite.plan.RelOptCluster in project calcite by apache.

the class RelFieldTrimmer method dummyProject.

/**
 * Creates a project with a dummy column, to protect the parts of the system
 * that cannot handle a relational expression with no columns.
 *
 * @param fieldCount Number of fields in the original relational expression
 * @param input Trimmed input
 * @return Dummy project, or null if no dummy is required
 */
protected TrimResult dummyProject(int fieldCount, RelNode input) {
    final RelOptCluster cluster = input.getCluster();
    final Mapping mapping = Mappings.create(MappingType.INVERSE_SURJECTION, fieldCount, 1);
    if (input.getRowType().getFieldCount() == 1) {
        // created for the child). We can't do better.
        return result(input, mapping);
    }
    final RexLiteral expr = cluster.getRexBuilder().makeExactLiteral(BigDecimal.ZERO);
    relBuilder.push(input);
    relBuilder.project(ImmutableList.<RexNode>of(expr), ImmutableList.of("DUMMY"));
    return result(relBuilder.build(), mapping);
}

Example 22 with RelOptCluster

use of org.apache.calcite.plan.RelOptCluster in project calcite by apache.

the class CalcitePrepareImpl method perform.

/**
 * Executes a prepare action.
 */
public <R> R perform(CalciteServerStatement statement, Frameworks.PrepareAction<R> action) {
    final CalcitePrepare.Context prepareContext = statement.createPrepareContext();
    final JavaTypeFactory typeFactory = prepareContext.getTypeFactory();
    final CalciteSchema schema = action.getConfig().getDefaultSchema() != null ? CalciteSchema.from(action.getConfig().getDefaultSchema()) : prepareContext.getRootSchema();
    CalciteCatalogReader catalogReader = new CalciteCatalogReader(schema.root(), schema.path(null), typeFactory, prepareContext.config());
    final RexBuilder rexBuilder = new RexBuilder(typeFactory);
    final RelOptPlanner planner = createPlanner(prepareContext, action.getConfig().getContext(), action.getConfig().getCostFactory());
    final RelOptCluster cluster = createCluster(planner, rexBuilder);
    return action.apply(cluster, catalogReader, prepareContext.getRootSchema().plus(), statement);
}

Example 23 with RelOptCluster

use of org.apache.calcite.plan.RelOptCluster in project calcite by apache.

the class PlannerImpl method ready.

private void ready() {
    switch(state) {
        case STATE_0_CLOSED:
            reset();
    }
    ensure(State.STATE_1_RESET);
    Frameworks.withPlanner(new Frameworks.PlannerAction<Void>() {

        public Void apply(RelOptCluster cluster, RelOptSchema relOptSchema, SchemaPlus rootSchema) {
            // use our own defaultSchema
            Util.discard(rootSchema);
            typeFactory = (JavaTypeFactory) cluster.getTypeFactory();
            planner = cluster.getPlanner();
            planner.setExecutor(executor);
            return null;
        }
    }, config);
    state = State.STATE_2_READY;
    // then, register the trait def specified in traitDefs.
    if (this.traitDefs != null) {
        planner.clearRelTraitDefs();
        for (RelTraitDef def : this.traitDefs) {
            planner.addRelTraitDef(def);
        }
    }
}

Example 24 with RelOptCluster

use of org.apache.calcite.plan.RelOptCluster in project calcite by apache.

the class PlannerImpl method rel.

public RelRoot rel(SqlNode sql) throws RelConversionException {
    ensure(State.STATE_4_VALIDATED);
    assert validatedSqlNode != null;
    final RexBuilder rexBuilder = createRexBuilder();
    final RelOptCluster cluster = RelOptCluster.create(planner, rexBuilder);
    final SqlToRelConverter.Config config = SqlToRelConverter.configBuilder().withConfig(sqlToRelConverterConfig).withTrimUnusedFields(false).withConvertTableAccess(false).build();
    final SqlToRelConverter sqlToRelConverter = new SqlToRelConverter(new ViewExpanderImpl(), validator, createCatalogReader(), cluster, convertletTable, config);
    root = sqlToRelConverter.convertQuery(validatedSqlNode, false, true);
    root = root.withRel(sqlToRelConverter.flattenTypes(root.rel, true));
    final RelBuilder relBuilder = config.getRelBuilderFactory().create(cluster, null);
    root = root.withRel(RelDecorrelator.decorrelateQuery(root.rel, relBuilder));
    state = State.STATE_5_CONVERTED;
    return root;
}

Example 25 with RelOptCluster

use of org.apache.calcite.plan.RelOptCluster in project calcite by apache.

the class RelMetadataTest method testAllPredicates.

@Test
public void testAllPredicates() {
    final Project rel = (Project) convertSql("select * from emp, dept");
    final Join join = (Join) rel.getInput();
    final RelOptTable empTable = join.getInput(0).getTable();
    final RelOptTable deptTable = join.getInput(1).getTable();
    Frameworks.withPlanner(new Frameworks.PlannerAction<Void>() {

        public Void apply(RelOptCluster cluster, RelOptSchema relOptSchema, SchemaPlus rootSchema) {
            checkAllPredicates(cluster, empTable, deptTable);
            return null;
        }
    });
}