Example usage for org.apache.cassandra.dht LocalPartitioner LocalPartitioner

Introduction

In this page you can find the example usage for org.apache.cassandra.dht LocalPartitioner LocalPartitioner.

Prototype

public LocalPartitioner(AbstractType<?> comparator) 

Source Link

Usage

From source file:com.mirantis.magnetodb.cassandra.db.index.MagnetoDBLocalSecondaryIndex.java

License:Apache License

public void init() {
    assert baseCfs != null && columnDefs != null && columnDefs.size() == 1;

    columnDef = columnDefs.iterator().next();

    isQueryPropertiesField = Boolean.parseBoolean(columnDef.getIndexOptions().get(QUERY_PROPERTIES_FIELD));

    if (!isQueryPropertiesField) {
        int prefixSize = columnDef.position();
        List<AbstractType<?>> types = new ArrayList<AbstractType<?>>(prefixSize + 1);
        types.add(columnDef.type);//  ww  w .  java2  s  .com
        for (int i = 0; i < prefixSize; i++)
            types.add(baseCfs.metadata.comparator.subtype(i));
        indexComparator = new CompoundDenseCellNameType(types);

        AbstractType<?> keyType = baseCfs.metadata.getKeyValidator();
        CFMetaData indexedCfMetadata = CFMetaData.newIndexMetadata(baseCfs.metadata, columnDef, indexComparator)
                .keyValidator(keyType).rebuild();
        indexCfs = ColumnFamilyStore.createColumnFamilyStore(baseCfs.keyspace, indexedCfMetadata.cfName,
                new LocalPartitioner(keyType), indexedCfMetadata);
    }
}

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