org.apache.calcite.rel.RelInput Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of calcite-core Show documentation
Show all versions of calcite-core Show documentation
Core Calcite APIs and engine.
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to you under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.calcite.rel;
import org.apache.calcite.plan.RelOptCluster;
import org.apache.calcite.plan.RelOptTable;
import org.apache.calcite.plan.RelTraitSet;
import org.apache.calcite.rel.core.AggregateCall;
import org.apache.calcite.rel.type.RelDataType;
import org.apache.calcite.rex.RexLiteral;
import org.apache.calcite.rex.RexNode;
import org.apache.calcite.util.ImmutableBitSet;
import com.google.common.collect.ImmutableList;
import java.util.List;
/**
* Context from which a relational expression can initialize itself,
* reading from a serialized form of the relational expression.
*/
public interface RelInput {
RelOptCluster getCluster();
RelTraitSet getTraitSet();
RelOptTable getTable(String table);
/**
* Returns the input relational expression. Throws if there is not precisely
* one input.
*/
RelNode getInput();
List getInputs();
/**
* Returns an expression.
*/
RexNode getExpression(String tag);
ImmutableBitSet getBitSet(String tag);
List getBitSetList(String tag);
List getAggregateCalls(String tag);
Object get(String tag);
/**
* Returns a {@code float} value. Throws if wrong type.
*/
String getString(String tag);
/**
* Returns a {@code float} value. Throws if not present or wrong type.
*/
float getFloat(String tag);
/**
* Returns an enum value. Throws if not a valid member.
*/
> E getEnum(String tag, Class enumClass);
List getExpressionList(String tag);
List getStringList(String tag);
List getIntegerList(String tag);
List> getIntegerListList(String tag);
RelDataType getRowType(String tag);
RelDataType getRowType(String expressionsTag, String fieldsTag);
RelCollation getCollation();
RelDistribution getDistribution();
ImmutableList> getTuples(String tag);
boolean getBoolean(String tag, boolean default_);
}
// End RelInput.java
© 2015 - 2024 Weber Informatics LLC | Privacy Policy