Package com.ericsson.otp.erlang

Class OtpErlangObject

java.lang.Object

com.ericsson.otp.erlang.OtpErlangObject

All Implemented Interfaces:

Serializable, Cloneable

Direct Known Subclasses:

OtpErlangAtom, OtpErlangBitstr, OtpErlangDouble, OtpErlangExternalFun, OtpErlangFun, OtpErlangList, OtpErlangLong, OtpErlangMap, OtpErlangPid, OtpErlangPort, OtpErlangRef, OtpErlangString, OtpErlangTuple

public abstract class OtpErlangObject
extends Object
implements Serializable, Cloneable

Base class of the Erlang data type classes. This class is used to represent an arbitrary Erlang term.

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static final class	OtpErlangObject.Hash

Field Summary

Fields

Modifier and Type	Field	Description
protected int	hashCodeValue

Constructor Summary

Constructors

Constructor	Description
OtpErlangObject()

Method Summary

Modifier and Type	Method	Description
<T> OtpErlangObject	bind(T binds)	Make new Erlang term replacing variables with the respective values from bindings argument(s).
Object	clone()
static OtpErlangObject	decode(OtpInputStream buf)	Read binary data in the Erlang external format, and produce a corresponding Erlang data type object.
protected int	doHashCode()
abstract void	encode(OtpOutputStream buf)	Convert the object according to the rules of the Erlang external format.
abstract boolean	equals(Object o)	Determine if two Erlang objects are equal.
int	hashCode()
<T> boolean	match(OtpErlangObject term, T binds)	Perform match operation against given term.
abstract String	toString()

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

hashCodeValue

protected int hashCodeValue

Constructor Details

OtpErlangObject

public OtpErlangObject()

Method Details

toString

public abstract String toString()

Overrides:

toString in class Object

Returns:

the printable representation of the object. This is usually similar to the representation used by Erlang for the same type of object.

encode

public abstract void encode(OtpOutputStream buf)

Convert the object according to the rules of the Erlang external format. This is mainly used for sending Erlang terms in messages, however it can also be used for storing terms to disk.

Parameters:

buf - an output stream to which the encoded term should be written.

decode

public static OtpErlangObject decode(OtpInputStream buf)
                              throws OtpErlangDecodeException

Read binary data in the Erlang external format, and produce a corresponding Erlang data type object. This method is normally used when Erlang terms are received in messages, however it can also be used for reading terms from disk.

Parameters:

buf - an input stream containing one or more encoded Erlang terms.

Returns:

an object representing one of the Erlang data types.

Throws:

OtpErlangDecodeException - if the stream does not contain a valid representation of an Erlang term.

equals

public abstract boolean equals(Object o)

Determine if two Erlang objects are equal. In general, Erlang objects are equal if the components they consist of are equal.

Overrides:

equals in class Object

Parameters:

o - the object to compare to.

Returns:

true if the objects are identical.

match

public <T> boolean match(OtpErlangObject term,
 T binds)

Perform match operation against given term.

Parameters:

term - the object to match

binds - variable bindings

Returns:

true if match succeeded

bind

public <T> OtpErlangObject bind(T binds)
                         throws OtpErlangException

Make new Erlang term replacing variables with the respective values from bindings argument(s).

Parameters:

binds - variable bindings

Returns:

new term

Throws:

OtpErlangException

hashCode

public int hashCode()

Overrides:

hashCode in class Object

doHashCode

protected int doHashCode()

clone

public Object clone()

Overrides:

clone in class Object