diff options
Diffstat (limited to 'sql/hive-thriftserver/src/main/java/org/apache/hive/service/cli/TypeQualifiers.java')
-rw-r--r-- | sql/hive-thriftserver/src/main/java/org/apache/hive/service/cli/TypeQualifiers.java | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/sql/hive-thriftserver/src/main/java/org/apache/hive/service/cli/TypeQualifiers.java b/sql/hive-thriftserver/src/main/java/org/apache/hive/service/cli/TypeQualifiers.java new file mode 100644 index 0000000000..c6da52c15a --- /dev/null +++ b/sql/hive-thriftserver/src/main/java/org/apache/hive/service/cli/TypeQualifiers.java @@ -0,0 +1,133 @@ +/** + * 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.hive.service.cli; + +import java.util.HashMap; +import java.util.Map; + +import org.apache.hadoop.hive.serde2.typeinfo.CharTypeInfo; +import org.apache.hadoop.hive.serde2.typeinfo.DecimalTypeInfo; +import org.apache.hadoop.hive.serde2.typeinfo.PrimitiveTypeInfo; +import org.apache.hadoop.hive.serde2.typeinfo.VarcharTypeInfo; +import org.apache.hive.service.cli.thrift.TCLIServiceConstants; +import org.apache.hive.service.cli.thrift.TTypeQualifierValue; +import org.apache.hive.service.cli.thrift.TTypeQualifiers; + +/** + * This class holds type qualifier information for a primitive type, + * such as char/varchar length or decimal precision/scale. + */ +public class TypeQualifiers { + private Integer characterMaximumLength; + private Integer precision; + private Integer scale; + + public TypeQualifiers() {} + + public Integer getCharacterMaximumLength() { + return characterMaximumLength; + } + public void setCharacterMaximumLength(int characterMaximumLength) { + this.characterMaximumLength = characterMaximumLength; + } + + public TTypeQualifiers toTTypeQualifiers() { + TTypeQualifiers ret = null; + + Map<String, TTypeQualifierValue> qMap = new HashMap<String, TTypeQualifierValue>(); + if (getCharacterMaximumLength() != null) { + TTypeQualifierValue val = new TTypeQualifierValue(); + val.setI32Value(getCharacterMaximumLength().intValue()); + qMap.put(TCLIServiceConstants.CHARACTER_MAXIMUM_LENGTH, val); + } + + if (precision != null) { + TTypeQualifierValue val = new TTypeQualifierValue(); + val.setI32Value(precision.intValue()); + qMap.put(TCLIServiceConstants.PRECISION, val); + } + + if (scale != null) { + TTypeQualifierValue val = new TTypeQualifierValue(); + val.setI32Value(scale.intValue()); + qMap.put(TCLIServiceConstants.SCALE, val); + } + + if (qMap.size() > 0) { + ret = new TTypeQualifiers(qMap); + } + + return ret; + } + + public static TypeQualifiers fromTTypeQualifiers(TTypeQualifiers ttq) { + TypeQualifiers ret = null; + if (ttq != null) { + ret = new TypeQualifiers(); + Map<String, TTypeQualifierValue> tqMap = ttq.getQualifiers(); + + if (tqMap.containsKey(TCLIServiceConstants.CHARACTER_MAXIMUM_LENGTH)) { + ret.setCharacterMaximumLength( + tqMap.get(TCLIServiceConstants.CHARACTER_MAXIMUM_LENGTH).getI32Value()); + } + + if (tqMap.containsKey(TCLIServiceConstants.PRECISION)) { + ret.setPrecision(tqMap.get(TCLIServiceConstants.PRECISION).getI32Value()); + } + + if (tqMap.containsKey(TCLIServiceConstants.SCALE)) { + ret.setScale(tqMap.get(TCLIServiceConstants.SCALE).getI32Value()); + } + } + return ret; + } + + public static TypeQualifiers fromTypeInfo(PrimitiveTypeInfo pti) { + TypeQualifiers result = null; + if (pti instanceof VarcharTypeInfo) { + result = new TypeQualifiers(); + result.setCharacterMaximumLength(((VarcharTypeInfo)pti).getLength()); + } else if (pti instanceof CharTypeInfo) { + result = new TypeQualifiers(); + result.setCharacterMaximumLength(((CharTypeInfo)pti).getLength()); + } else if (pti instanceof DecimalTypeInfo) { + result = new TypeQualifiers(); + result.setPrecision(((DecimalTypeInfo)pti).precision()); + result.setScale(((DecimalTypeInfo)pti).scale()); + } + return result; + } + + public Integer getPrecision() { + return precision; + } + + public void setPrecision(Integer precision) { + this.precision = precision; + } + + public Integer getScale() { + return scale; + } + + public void setScale(Integer scale) { + this.scale = scale; + } + +} |