Example usage for org.apache.cassandra.utils UUIDGen decompose

Introduction

In this page you can find the example usage for org.apache.cassandra.utils UUIDGen decompose.

Prototype

public static byte[] decompose(UUID uuid) 

Source Link

Document

decomposes a uuid into raw bytes.

Usage

From source file:com.dse.pig.udfs.AbstractCassandraStorage.java

License:Apache License

/** convert object to ByteBuffer */
protected ByteBuffer objToBB(Object o) {
    if (o == null)
        return nullToBB();
    if (o instanceof java.lang.String)
        return ByteBuffer.wrap(new DataByteArray((String) o).get());
    if (o instanceof Integer)
        return Int32Type.instance.decompose((Integer) o);
    if (o instanceof Long)
        return LongType.instance.decompose((Long) o);
    if (o instanceof Float)
        return FloatType.instance.decompose((Float) o);
    if (o instanceof Double)
        return DoubleType.instance.decompose((Double) o);
    if (o instanceof java.util.UUID)
        //           return ByteBuffer.wrap(((UUID) o).toString().getBytes());
        return ByteBuffer.wrap(UUIDGen.decompose((java.util.UUID) o));
    if (o instanceof Tuple) {
        List<Object> objects = ((Tuple) o).getAll();
        //collections
        if (objects.size() > 0 && objects.get(0) instanceof String) {
            String collectionType = (String) objects.get(0);
            if ("set".equalsIgnoreCase(collectionType) || "list".equalsIgnoreCase(collectionType))
                return objToListOrSetBB(objects.subList(1, objects.size()));
            else if ("map".equalsIgnoreCase(collectionType))
                return objToMapBB(objects.subList(1, objects.size()));

        }/*from www.  j  av a2 s.  c  o m*/
        return objToCompositeBB(objects);
    }

    return ByteBuffer.wrap(((DataByteArray) o).get());
}

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From source file:com.perpetumobile.bit.orm.cassandra.CliMain.java

License:Apache License

/**
 * Used to convert value (function argument, string) into byte[]
 * @param functionCall - tree representing function call ^(FUNCTION_CALL function_name value)
 * @param columnFamily - column family definition (CfDef)
 * @param columnName   - column name as byte[] (used to update CfDef)
 * @param withUpdate   - also updates column family metadata for given column
 * @return byte[] - string value as byte[]
 *///from  www . j  a v  a2  s .c  o m
private ByteBuffer convertValueByFunction(Tree functionCall, CfDef columnFamily, ByteBuffer columnName,
        boolean withUpdate) {
    String functionName = functionCall.getChild(0).getText();
    Tree argumentTree = functionCall.getChild(1);
    String functionArg = (argumentTree == null) ? "" : CliUtils.unescapeSQLString(argumentTree.getText());
    AbstractType<?> validator = getTypeByFunction(functionName);

    try {

        ByteBuffer value;

        if (functionArg.isEmpty()) {
            if (validator instanceof TimeUUIDType) {
                value = ByteBuffer.wrap(UUIDGen.getTimeUUIDBytes());
            } else if (validator instanceof LexicalUUIDType) {
                value = ByteBuffer.wrap(UUIDGen.decompose(UUID.randomUUID()));
            } else if (validator instanceof BytesType) {
                value = ByteBuffer.wrap(new byte[0]);
            } else {
                throw new RuntimeException(
                        String.format("Argument for '%s' could not be empty.", functionName));
            }
        } else {
            value = getBytesAccordingToType(functionArg, validator);
        }

        // performing ColumnDef local validator update
        if (withUpdate) {
            updateColumnMetaData(columnFamily, columnName, validator.toString());
        }

        return value;
    } catch (Exception e) {
        throw new RuntimeException(e);
    }
}

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From source file:org.apache.hadoop.hive.cassandra.ql.udf.UDFUuid.java

License:Apache License

public BytesWritable evaluate(Text text) {
    return new BytesWritable(UUIDGen.decompose(UUID.fromString(new String(text.getBytes()))));
}

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From source file:org.apache.lucene.cassandra.fs.CassandraFileSystemThriftStore.java

License:Apache License

/**
 * {@inheritDoc}/*w  w w . j  a  va 2 s  . c om*/
 */
public void deleteSubBlocks(INode inode) throws IOException {
    // Get all the SubBlock keys to delete.
    List<UUID> subBlockKeys = getListOfBlockIds(inode.getBlocks());
    try {
        // TODO (patricioe) can we send one big batch mutation here ?
        for (UUID subBlocksKey : subBlockKeys) {
            client.remove(ByteBuffer.wrap(UUIDGen.decompose(subBlocksKey)), sblockPath,
                    System.currentTimeMillis(), consistencyLevelWrite);
        }
    } catch (Exception e) {
        throw new IOException(e);
    }
}

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