org.apache.cassandra.cql3.functions

Class JavaUDF

java.lang.Object

org.apache.cassandra.cql3.functions.JavaUDF

public abstract class JavaUDF
extends java.lang.Object

Base class for all Java UDFs. Used to separate internal classes like UDFunction from user provided code. Only references to this class (and generated implementations) are allowed - references from this class back to C* code are not allowed (except argument/return type information).

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	JavaUDF(com.datastax.driver.core.TypeCodec<java.lang.Object> returnCodec, com.datastax.driver.core.TypeCodec<java.lang.Object>[] argCodecs)

Method Summary

Modifier and Type	Method and Description
protected boolean	compose_boolean(int protocolVersion, int argIndex, java.nio.ByteBuffer value)
protected byte	compose_byte(int protocolVersion, int argIndex, java.nio.ByteBuffer value)
protected double	compose_double(int protocolVersion, int argIndex, java.nio.ByteBuffer value)
protected float	compose_float(int protocolVersion, int argIndex, java.nio.ByteBuffer value)
protected int	compose_int(int protocolVersion, int argIndex, java.nio.ByteBuffer value)
protected long	compose_long(int protocolVersion, int argIndex, java.nio.ByteBuffer value)
protected short	compose_short(int protocolVersion, int argIndex, java.nio.ByteBuffer value)
protected java.lang.Object	compose(int protocolVersion, int argIndex, java.nio.ByteBuffer value)
protected java.nio.ByteBuffer	decompose(int protocolVersion, java.lang.Object value)
protected abstract java.nio.ByteBuffer	executeImpl(int protocolVersion, java.util.List<java.nio.ByteBuffer> params)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JavaUDF

protected JavaUDF(com.datastax.driver.core.TypeCodec<java.lang.Object> returnCodec,
                  com.datastax.driver.core.TypeCodec<java.lang.Object>[] argCodecs)

Method Detail

executeImpl

protected abstract java.nio.ByteBuffer executeImpl(int protocolVersion,
                                                   java.util.List<java.nio.ByteBuffer> params)

compose

protected java.lang.Object compose(int protocolVersion,
                                   int argIndex,
                                   java.nio.ByteBuffer value)

decompose

protected java.nio.ByteBuffer decompose(int protocolVersion,
                                        java.lang.Object value)

compose_float

protected float compose_float(int protocolVersion,
                              int argIndex,
                              java.nio.ByteBuffer value)

compose_double

protected double compose_double(int protocolVersion,
                                int argIndex,
                                java.nio.ByteBuffer value)

compose_byte

protected byte compose_byte(int protocolVersion,
                            int argIndex,
                            java.nio.ByteBuffer value)

compose_short

protected short compose_short(int protocolVersion,
                              int argIndex,
                              java.nio.ByteBuffer value)

compose_int

protected int compose_int(int protocolVersion,
                          int argIndex,
                          java.nio.ByteBuffer value)

compose_long

protected long compose_long(int protocolVersion,
                            int argIndex,
                            java.nio.ByteBuffer value)

compose_boolean

protected boolean compose_boolean(int protocolVersion,
                                  int argIndex,
                                  java.nio.ByteBuffer value)