com.hazelcast.org.apache.calcite.sql.type.SqlTypeAssignmentRule Maven / Gradle / Ivy
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* 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 com.hazelcast.com.liance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.com.hazelcast.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 com.hazelcast.org.apache.calcite.sql.type;
import com.hazelcast.com.google.com.hazelcast.com.on.collect.ImmutableMap;
import com.hazelcast.com.google.com.hazelcast.com.on.collect.ImmutableSet;
import java.util.EnumSet;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
/**
* Rules that determine whether a type is assignable from another type.
*/
public class SqlTypeAssignmentRule implements SqlTypeMappingRule {
//~ Static fields/initializers ---------------------------------------------
private static final SqlTypeAssignmentRule INSTANCE;
//~ Instance fields --------------------------------------------------------
private final Map> map;
//~ Constructors -----------------------------------------------------------
/**
* Creates a {@code SqlTypeAssignmentRules} with specified type mappings {@code map}.
*
* Make this constructor private intentionally, use {@link #instance()}.
*
* @param map The type mapping, for each map entry, the values types can be assigned to
* the key type
*/
private SqlTypeAssignmentRule(
Map> map) {
this.map = ImmutableMap.copyOf(map);
}
static {
final SqlTypeMappingRules.Builder rules = SqlTypeMappingRules.builder();
final Set rule = new HashSet<>();
// IntervalYearMonth is assignable from...
for (SqlTypeName interval : SqlTypeName.YEAR_INTERVAL_TYPES) {
rules.add(interval, SqlTypeName.YEAR_INTERVAL_TYPES);
}
for (SqlTypeName interval : SqlTypeName.DAY_INTERVAL_TYPES) {
rules.add(interval, SqlTypeName.DAY_INTERVAL_TYPES);
}
// MULTISET is assignable from...
rules.add(SqlTypeName.MULTISET, EnumSet.of(SqlTypeName.MULTISET));
// TINYINT is assignable from...
rules.add(SqlTypeName.TINYINT, EnumSet.of(SqlTypeName.TINYINT));
// SMALLINT is assignable from...
rule.clear();
rule.add(SqlTypeName.TINYINT);
rule.add(SqlTypeName.SMALLINT);
rules.add(SqlTypeName.SMALLINT, rule);
// INTEGER is assignable from...
rule.clear();
rule.add(SqlTypeName.TINYINT);
rule.add(SqlTypeName.SMALLINT);
rule.add(SqlTypeName.INTEGER);
rules.add(SqlTypeName.INTEGER, rule);
// BIGINT is assignable from...
rule.clear();
rule.add(SqlTypeName.TINYINT);
rule.add(SqlTypeName.SMALLINT);
rule.add(SqlTypeName.INTEGER);
rule.add(SqlTypeName.BIGINT);
rules.add(SqlTypeName.BIGINT, rule);
// FLOAT (up to 64 bit floating point) is assignable from...
rule.clear();
rule.add(SqlTypeName.TINYINT);
rule.add(SqlTypeName.SMALLINT);
rule.add(SqlTypeName.INTEGER);
rule.add(SqlTypeName.BIGINT);
rule.add(SqlTypeName.DECIMAL);
rule.add(SqlTypeName.FLOAT);
rules.add(SqlTypeName.FLOAT, rule);
// REAL (32 bit floating point) is assignable from...
rule.clear();
rule.add(SqlTypeName.TINYINT);
rule.add(SqlTypeName.SMALLINT);
rule.add(SqlTypeName.INTEGER);
rule.add(SqlTypeName.BIGINT);
rule.add(SqlTypeName.DECIMAL);
rule.add(SqlTypeName.FLOAT);
rule.add(SqlTypeName.REAL);
rules.add(SqlTypeName.REAL, rule);
// DOUBLE is assignable from...
rule.clear();
rule.add(SqlTypeName.TINYINT);
rule.add(SqlTypeName.SMALLINT);
rule.add(SqlTypeName.INTEGER);
rule.add(SqlTypeName.BIGINT);
rule.add(SqlTypeName.DECIMAL);
rule.add(SqlTypeName.FLOAT);
rule.add(SqlTypeName.REAL);
rule.add(SqlTypeName.DOUBLE);
rules.add(SqlTypeName.DOUBLE, rule);
// DECIMAL is assignable from...
rule.clear();
rule.add(SqlTypeName.TINYINT);
rule.add(SqlTypeName.SMALLINT);
rule.add(SqlTypeName.INTEGER);
rule.add(SqlTypeName.BIGINT);
rule.add(SqlTypeName.REAL);
rule.add(SqlTypeName.DOUBLE);
rule.add(SqlTypeName.DECIMAL);
rules.add(SqlTypeName.DECIMAL, rule);
// VARBINARY is assignable from...
rule.clear();
rule.add(SqlTypeName.VARBINARY);
rule.add(SqlTypeName.BINARY);
rules.add(SqlTypeName.VARBINARY, rule);
// CHAR is assignable from...
rules.add(SqlTypeName.CHAR, EnumSet.of(SqlTypeName.CHAR));
// VARCHAR is assignable from...
rule.clear();
rule.add(SqlTypeName.CHAR);
rule.add(SqlTypeName.VARCHAR);
rules.add(SqlTypeName.VARCHAR, rule);
// BOOLEAN is assignable from...
rules.add(SqlTypeName.BOOLEAN, EnumSet.of(SqlTypeName.BOOLEAN));
// BINARY is assignable from...
rule.clear();
rule.add(SqlTypeName.BINARY);
rule.add(SqlTypeName.VARBINARY);
rules.add(SqlTypeName.BINARY, rule);
// DATE is assignable from...
rule.clear();
rule.add(SqlTypeName.DATE);
rules.add(SqlTypeName.DATE, rule);
// TIME is assignable from...
rule.clear();
rule.add(SqlTypeName.TIME);
rules.add(SqlTypeName.TIME, rule);
// TIME WITH LOCAL TIME ZONE is assignable from...
rules.add(SqlTypeName.TIME_WITH_LOCAL_TIME_ZONE,
EnumSet.of(SqlTypeName.TIME_WITH_LOCAL_TIME_ZONE));
// TIMESTAMP is assignable from ...
rules.add(SqlTypeName.TIMESTAMP, EnumSet.of(SqlTypeName.TIMESTAMP));
// TIMESTAMP WITH LOCAL TIME ZONE is assignable from...
rules.add(SqlTypeName.TIMESTAMP_WITH_LOCAL_TIME_ZONE,
EnumSet.of(SqlTypeName.TIMESTAMP_WITH_LOCAL_TIME_ZONE));
// GEOMETRY is assignable from ...
rules.add(SqlTypeName.GEOMETRY, EnumSet.of(SqlTypeName.GEOMETRY));
// ARRAY is assignable from ...
rules.add(SqlTypeName.ARRAY, EnumSet.of(SqlTypeName.ARRAY));
// MAP is assignable from ...
rules.add(SqlTypeName.MAP, EnumSet.of(SqlTypeName.MAP));
// ANY is assignable from ...
rule.clear();
rule.add(SqlTypeName.TINYINT);
rule.add(SqlTypeName.SMALLINT);
rule.add(SqlTypeName.INTEGER);
rule.add(SqlTypeName.BIGINT);
rule.add(SqlTypeName.DECIMAL);
rule.add(SqlTypeName.FLOAT);
rule.add(SqlTypeName.REAL);
rule.add(SqlTypeName.TIME);
rule.add(SqlTypeName.DATE);
rule.add(SqlTypeName.TIMESTAMP);
rules.add(SqlTypeName.ANY, rule);
INSTANCE = new SqlTypeAssignmentRule(rules.map);
}
//~ Methods ----------------------------------------------------------------
/** Returns an instance. */
public static SqlTypeAssignmentRule instance() {
return INSTANCE;
}
@Override public Map> getTypeMapping() {
return this.map;
}
}