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/*
Licensed to Diennea S.r.l. under one
or more contributor license agreements. See the NOTICE file
distributed with this work for additional information
regarding copyright ownership. Diennea S.r.l. 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 herddb.utils;
import java.util.Objects;
/**
* Base class for DataAccessors, provide default implementations
*/
public abstract class AbstractDataAccessor implements DataAccessor {
@Override
public boolean equals(Object obj) {
if (obj instanceof DataAccessor) {
DataAccessor da = (DataAccessor) obj;
int size = this.getNumFields();
int size2 = da.getNumFields();
if (size != size2) {
return false;
}
// leverage zero-copy and to not create temporary arrays
for (int i = 0; i < size; i++) {
if (!Objects.equals(get(i), da.get(i))) {
return false;
}
}
return true;
}
return false;
}
private int hashcode = Integer.MIN_VALUE;
@Override
public int hashCode() {
if (hashcode == Integer.MIN_VALUE) {
int size = this.getNumFields();
int res = 0;
// leverage zero-copy and to not create temporary arrays
for (int i = 0; i < size; i++) {
res += Objects.hashCode(get(i));
}
hashcode = res;
}
return hashcode;
}
}