/*
* Copyright ( c ) 2016 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
* or visit www . oracle . com if you need additional information or have any
* questions .
*/
package gc.g1.plab.lib;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;
import java.util.stream.Stream;
public class PlabInfo {
private final Map<String, Long > plabInfo;
public PlabInfo() {
plabInfo = new HashMap<>();
}
private PlabInfo(Map<String, Long > map) {
plabInfo = new HashMap<>(map);
}
/**
* Add key and value to underlying Map .
* @ param key PLAB info field name
* @ param value PLAB info value for field
*/
public void put(String key, long value) {
plabInfo.put(key, value);
}
/**
* Get stream of Map . Entry representing underlying Map with PLAB information .
*/
public Stream<Map.Entry<String, Long >> entryStream() {
return plabInfo.entrySet().stream();
}
/**
* Returns the PlabInfo narrowed for the given fields only
* @ param fields
* @ return PlabInfo
*/
public PlabInfo filter(List<String> fields) {
return new PlabInfo(entryStream()
.filter(field -> fields.contains(field.getKey()))
.collect(Collectors.toMap(
item -> item.getKey(),
item -> item.getValue())
)
);
}
/**
* Checks if statistic contains expected fields .
* @ param fields fields which should be in statistic
* @ return true if all fields are in statistic , false otherwise
*/
public boolean checkFields(List<String> fields) {
for (String key : fields) {
if (!plabInfo.containsKey(key)) {
return false ;
}
}
return true ;
}
/**
* Return a collection of the values .
* @ return collection of values
*/
public Collection<Long > values() {
return plabInfo.values();
}
/**
* Get value for specified field .
* @ param field
* @ return long value which is contained in specified field
*/
public long get(String field) {
return plabInfo.get(field);
}
}
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