package org.rrd4j.core;
import java.io.IOException;
class RrdString extends RrdPrimitive {
private String cache;
RrdString(RrdUpdater updater, boolean isConstant) throws IOException {
super(updater, RrdPrimitive.RRD_STRING, isConstant);
}
RrdString(RrdUpdater updater) throws IOException {
this(updater, false);
}
void set(String value) throws IOException {
if (!isCachingAllowed()) {
writeString(value);
}
// caching allowed
else if (cache == null || !cache.equals(value)) {
// update cache
writeString(cache = value);
}
}
String get() throws IOException {
if (!isCachingAllowed()) {
return readString();
}
else {
if (cache == null) {
cache = readString();
}
return cache;
}
}
}