diff options
Diffstat (limited to 'src/com/p4square/grow/backend/db')
-rw-r--r-- | src/com/p4square/grow/backend/db/CassandraKey.java | 28 | ||||
-rw-r--r-- | src/com/p4square/grow/backend/db/CassandraProviderImpl.java | 42 |
2 files changed, 70 insertions, 0 deletions
diff --git a/src/com/p4square/grow/backend/db/CassandraKey.java b/src/com/p4square/grow/backend/db/CassandraKey.java new file mode 100644 index 0000000..8e23087 --- /dev/null +++ b/src/com/p4square/grow/backend/db/CassandraKey.java @@ -0,0 +1,28 @@ +/* + * Copyright 2013 Jesse Morgan + */ + +package com.p4square.grow.backend.db; + +/** + * CassandraKey represents a Cassandra key / column pair. + * + * @author Jesse Morgan <jesse@jesterpm.net> + */ +public class CassandraKey { + private final String mId; + private final String mColumn; + + public CassandraKey(String id, String column) { + mId = id; + mColumn = column; + } + + public String getId() { + return mId; + } + + public String getColumn() { + return mColumn; + } +} diff --git a/src/com/p4square/grow/backend/db/CassandraProviderImpl.java b/src/com/p4square/grow/backend/db/CassandraProviderImpl.java new file mode 100644 index 0000000..fb6e34e --- /dev/null +++ b/src/com/p4square/grow/backend/db/CassandraProviderImpl.java @@ -0,0 +1,42 @@ +/* + * Copyright 2013 Jesse Morgan + */ + +package com.p4square.grow.backend.db; + +import java.io.IOException; + +import org.codehaus.jackson.map.DeserializationConfig; +import org.codehaus.jackson.map.ObjectMapper; +import org.codehaus.jackson.map.SerializationConfig; + +import com.p4square.grow.provider.JsonEncodedProvider; + +/** + * Provider implementation backed by a Cassandra ColumnFamily. + * + * @author Jesse Morgan <jesse@jesterpm.net> + */ +public class CassandraProviderImpl<V> extends JsonEncodedProvider<CassandraKey, V> { + private final CassandraDatabase mDb; + private final String mColumnFamily; + + public CassandraProviderImpl(CassandraDatabase db, String columnFamily, Class<V> clazz) { + super(clazz); + + mDb = db; + mColumnFamily = columnFamily; + } + + @Override + public V get(CassandraKey key) throws IOException { + String blob = mDb.getKey(mColumnFamily, key.getId(), key.getColumn()); + return decode(blob); + } + + @Override + public void put(CassandraKey key, V obj) throws IOException { + String blob = encode(obj); + mDb.putKey(mColumnFamily, key.getId(), key.getColumn(), blob); + } +} |