com.hazelcast.jet.sql.impl.extract.HazelcastJsonQueryTarget Maven / Gradle / Ivy
/*
* Copyright 2024 Hazelcast Inc.
*
* Licensed under the Hazelcast Community License (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://hazelcast.com/hazelcast-community-license
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.hazelcast.jet.sql.impl.extract;
import com.hazelcast.internal.serialization.Data;
import com.hazelcast.internal.serialization.SerializationService;
import com.hazelcast.query.impl.getters.Extractors;
import com.hazelcast.sql.impl.QueryException;
import com.hazelcast.sql.impl.extract.QueryExtractor;
import com.hazelcast.sql.impl.extract.QueryTarget;
import com.hazelcast.sql.impl.type.QueryDataType;
import com.hazelcast.sql.impl.type.QueryDataTypeMismatchException;
import javax.annotation.concurrent.NotThreadSafe;
// remove in favor of IMDG implementation when JSON is supported
@NotThreadSafe
class HazelcastJsonQueryTarget implements QueryTarget {
private final SerializationService serializationService;
private final Extractors extractors;
private final boolean key;
private Object target;
HazelcastJsonQueryTarget(SerializationService serializationService, Extractors extractors, boolean key) {
this.serializationService = serializationService;
this.extractors = extractors;
this.key = key;
}
@Override
public void setTarget(Object target, Data targetData) {
if (target == null && targetData != null) {
this.target = targetData;
} else {
this.target = target;
}
}
@Override
public QueryExtractor createExtractor(String path, QueryDataType type) {
return path == null ? createExtractor(type) : createFieldExtractor(path, type);
}
private QueryExtractor createExtractor(QueryDataType type) {
return () -> {
try {
Object value = serializationService.toObject(target);
return type.convert(value);
} catch (QueryDataTypeMismatchException e) {
throw QueryException.dataException("Failed to extract map entry " + (key ? "key" : "value")
+ " because of type mismatch [expectedClass=" + e.getExpectedClass().getName()
+ ", actualClass=" + e.getActualClass().getName() + ']');
} catch (Exception e) {
throw QueryException.dataException("Failed to extract map entry " + (key ? "key" : "value") + ": "
+ e.getMessage(), e);
}
};
}
private QueryExtractor createFieldExtractor(String path, QueryDataType type) {
return () -> {
try {
Object value = extractors.extract(target, path, null, false);
return type.convert(value);
} catch (QueryDataTypeMismatchException e) {
throw QueryException.dataException("Failed to extract map entry " + (key ? "key" : "value") + " field \""
+ path + "\" because of type mismatch [expectedClass=" + e.getExpectedClass().getName()
+ ", actualClass=" + e.getActualClass().getName() + ']');
} catch (Exception e) {
throw QueryException.dataException("Failed to extract map entry " + (key ? "key" : "value") + " field \""
+ path + "\": " + e.getMessage(), e);
}
};
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy