SDN Controller Programming Guide

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int comparison = 0;
if (other.id != null) {
comparison = id.compareTo(other.id);
}
if (comparison == 0) {
comparison = this.severity.compareTo(other.severity);
}
return comparison;
}
}
private static class AlertsBySeverity
implements CfQueryOperations<String, CassandraAlert> {
private static final AnnotatedCompositeSerializer<SeverityComposite>
serializer = new AnnotatedCompositeSerializer<SeverityComposite>
(SeverityComposite.class);
private static final ColumnFamily<String, SeverityComposite> COL_FAMILY
= ColumnFamily.newColumnFamily("AlertsBySeverity",
StringSerializer .get(), serializer, ByteSerializer .get());
private static final ColumnFamilyDefinition<String, SeverityComposite>
CF_DEF = new ColumnFamilyDefinition<String, SeverityComposite>(
COL_FAMILY, BasicType.UTF8, BasicType.BYTES,
new CompositeType(BasicType.UTF8, BasicType.UTF8),
"Alerts By Severity CF");
private static final String ROW_KEY = "AlertsBySeverity";
private static final
Provider<ColumnDecoder<SeverityComposite, ?>,
ColumnName<SeverityComposite, ?>> SEVERITY_DECODER = new Provider
<ColumnDecoder<SeverityComposite, ?>,
ColumnName<SeverityComposite, ?>>() {
@Override
public ColumnDecoder<SeverityComposite, ?>
get(ColumnName<SeverityComposite, ?> entity) {
return ValuelessColumnDecoder.getInstance();
}
};
@Override
public void prepareMutation(CassandraAlert transportable,
DataStoreContext context) throws Exception {