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java.lang.Object | +--galaxy.lang.GalaxyObject | +--galaxy.lang.GFrame
The meaning of a sentence in the Galaxy system is represented by a frame. These frames are used to communicate among the various processes comprising a Galaxy system. They represent discourse history, drive dialog, and represent computer responses. As a data structure, a frame is not unlike a hash table; it contains key/value pairs. In each domain, conventions must be established to represent meaning appropriately. It would be ideal if there were one set of conventions used by all domains. As each new domain is explored, conventions are improved. There are several competing factors influencing frame design. These factors represent the various uses a frame will be put to.
A frame has a name, a property list, and a set of predicates.
The property list is a set of key/value pairs.
The base class for the various semantic frames Clause, QSet, and Predicate.
toString() will produce a pretty printed version of the frame.
An example frame.
{c when :aux "link" :topic {q title :name "deep space nine" :pred {p on_set } :domain "Movies" }
Values may be:
GFrame | A Galaxy frame |
Symbol | |
Integer | |
Float | To be implemented. |
String | |
GVector | This is like list in the C version. |
Clause
,
QSet
,
Predicate
,
Symbol
,
GVector
Field Summary | |
static java.lang.String |
GAL_BROKER_CALL_ID_FRAME_KEY
|
static int |
GAL_CLAUSE
|
static java.lang.String |
GAL_CONNECTION_TYPE_FRAME_KEY
|
static java.lang.String |
GAL_ERROR_DESCRIPTION_FRAME_KEY
|
static java.lang.String |
GAL_ERROR_NUMBER_FRAME_KEY
|
static java.lang.String |
GAL_HUB_OPAQUE_DATA_FRAME_KEY
|
static int |
GAL_NULLFRAME
|
static int |
GAL_PERMANENT_LOCK
|
static int |
GAL_PRED
|
static java.lang.String |
GAL_ROUND_TRIP_FRAME_KEY
|
static java.lang.String |
GAL_SERVER_ID_HUB_FRAME_KEY
|
static int |
GAL_SERVER_READS_ONLY_FROM_SESSION
|
static java.lang.String |
GAL_SERVER_TOKEN_INDEX_FRAME_KEY
|
static int |
GAL_SERVER_WRITES_ONLY_TO_SESSION
|
static java.lang.String |
GAL_SESSION_ID_FRAME_KEY
|
static int |
GAL_SESSION_WRITES_ONLY_TO_SERVER
|
static java.lang.String |
GAL_SIGNATURES_FRAME_KEY
|
static java.lang.String |
GAL_TOKEN_INDEX_FRAME_KEY
|
static int |
GAL_TOPIC
|
Fields inherited from class galaxy.lang.GalaxyObject |
GAL_BINARY, GAL_CLAUSE_FRAME, GAL_FLOAT, GAL_FLOAT_32, GAL_FLOAT_64, GAL_FRAME, GAL_FREE, GAL_INT, GAL_INT_16, GAL_INT_32, GAL_INT_64, GAL_KEYWORD, GAL_LIST, GAL_PRED_FRAME, GAL_PROXY, GAL_PTR, GAL_STRING, GAL_SYMBOL, GAL_TAG, GAL_TOKEN, GAL_TOPIC_FRAME, nameToType, type, typeToName |
Constructor Summary | |
GFrame(Symbol name,
int frameType)
|
Method Summary | |
void |
addNameToFrame(Symbol name)
|
void |
addPredicateToFrame(Predicate predicate)
|
void |
addPredicateToTopic(Predicate predicate)
This checks if such a predicate already exists, and if so, it joins it with an 'and'. |
boolean |
containsProperty(java.lang.String key)
|
boolean |
containsProperty(Symbol key)
|
GFrame |
copy()
|
void |
copyPredicates(GFrame fromFrame)
|
static GFrame |
decodeFrame(XdrInBuffer buffer)
Decodes a frame from a XDR buffer. |
static java.lang.Object |
decodeObject(XdrInBuffer buffer)
Decodes the next object from a XDR buffer. |
boolean |
encodeFrame(XdrOutBuffer buffer)
Encodes this frame into a XDR buffer. |
static boolean |
encodeObject(XdrOutBuffer buffer,
java.lang.Object object)
Encodes an object into a XDR buffer. |
Predicate |
findPredicate(java.lang.String name)
Finds and returns a pred in GFrame that has the same name as predicate. |
Predicate |
findPredicate(Symbol name)
|
GBinary |
getBinary(java.lang.String key)
|
GBinary |
getBinary(Symbol key)
|
java.lang.Float |
getFloat(java.lang.String key)
|
java.lang.Float |
getFloat(Symbol key)
|
GFrame |
getFrame(java.lang.String key)
|
GFrame |
getFrame(Symbol key)
|
int |
getFrameType()
|
java.lang.Integer |
getInt(java.lang.String key)
|
java.lang.Integer |
getInt(Symbol key)
|
GVector |
getList(java.lang.String key)
|
GVector |
getList(Symbol key)
|
Symbol |
getName()
|
Predicate |
getPredicate(Symbol name)
|
java.lang.Object |
getProperty(java.lang.String key)
|
java.lang.Object |
getProperty(Symbol key)
|
java.lang.Object |
getPropertyVerbatim(Symbol key)
|
java.lang.String |
getString(java.lang.String key)
|
java.lang.String |
getString(Symbol key)
|
QSet |
getTopic()
|
boolean |
isDate()
|
boolean |
isTime()
|
void |
movePredicates(GFrame fromFrame)
|
static GFrame |
parseFrame(java.lang.String frameString)
|
java.util.Enumeration |
predicateKeys()
|
PredicateEnumeration |
predicates()
|
java.util.Enumeration |
propertyKeys()
|
void |
removePredicate(Symbol name)
|
void |
removeProperty(java.lang.String key)
|
void |
removeProperty(Symbol key)
|
void |
removePropertyVerbatim(Symbol key)
|
void |
setFrameType(int frameType)
|
void |
setName(Symbol name)
|
void |
setPredicate(Predicate p)
|
void |
setProperty(java.lang.String key,
float f)
|
void |
setProperty(java.lang.String key,
int v)
|
void |
setProperty(java.lang.String key,
java.lang.Object value)
|
void |
setProperty(Symbol key,
float f)
|
void |
setProperty(Symbol key,
int v)
|
void |
setProperty(Symbol key,
java.lang.Object value)
|
void |
setPropertyVerbatim(java.lang.String key,
java.lang.Object value)
|
void |
setPropertyVerbatim(Symbol key,
java.lang.Object value)
|
TimePredicateEnumeration |
timePredicates()
|
java.lang.String |
toFormattedString()
|
java.lang.StringBuffer |
toFormattedStringBuffer(java.lang.StringBuffer buff,
int indent)
|
java.lang.String |
toString()
|
java.lang.StringBuffer |
toStringBuffer(java.lang.StringBuffer buff)
|
Methods inherited from class galaxy.lang.GalaxyObject |
getType, getTypeForObject, getTypeName, nameType |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Field Detail |
public static java.lang.String GAL_ERROR_NUMBER_FRAME_KEY
public static java.lang.String GAL_ERROR_DESCRIPTION_FRAME_KEY
public static java.lang.String GAL_SESSION_ID_FRAME_KEY
public static java.lang.String GAL_TOKEN_INDEX_FRAME_KEY
public static java.lang.String GAL_SERVER_TOKEN_INDEX_FRAME_KEY
public static java.lang.String GAL_HUB_OPAQUE_DATA_FRAME_KEY
public static java.lang.String GAL_SIGNATURES_FRAME_KEY
public static java.lang.String GAL_BROKER_CALL_ID_FRAME_KEY
public static java.lang.String GAL_ROUND_TRIP_FRAME_KEY
public static java.lang.String GAL_CONNECTION_TYPE_FRAME_KEY
public static java.lang.String GAL_SERVER_ID_HUB_FRAME_KEY
public static final int GAL_NULLFRAME
public static final int GAL_TOPIC
public static final int GAL_CLAUSE
public static final int GAL_PRED
public static final int GAL_SERVER_READS_ONLY_FROM_SESSION
public static final int GAL_SESSION_WRITES_ONLY_TO_SERVER
public static final int GAL_SERVER_WRITES_ONLY_TO_SESSION
public static final int GAL_PERMANENT_LOCK
Constructor Detail |
public GFrame(Symbol name, int frameType)
Method Detail |
public void setFrameType(int frameType)
public int getFrameType()
public Symbol getName()
public void setName(Symbol name)
public void setPropertyVerbatim(Symbol key, java.lang.Object value)
public void setPropertyVerbatim(java.lang.String key, java.lang.Object value)
public void setProperty(Symbol key, java.lang.Object value)
public void setProperty(java.lang.String key, java.lang.Object value)
public void setProperty(java.lang.String key, int v)
public void setProperty(Symbol key, int v)
public void setProperty(java.lang.String key, float f)
public void setProperty(Symbol key, float f)
public java.util.Enumeration propertyKeys()
public boolean containsProperty(Symbol key)
public boolean containsProperty(java.lang.String key)
public java.lang.Object getPropertyVerbatim(Symbol key)
public java.lang.Object getProperty(Symbol key)
public java.lang.Object getProperty(java.lang.String key)
public GFrame getFrame(java.lang.String key)
public GFrame getFrame(Symbol key)
public java.lang.String getString(java.lang.String key)
public java.lang.String getString(Symbol key)
public java.lang.Integer getInt(java.lang.String key)
public java.lang.Integer getInt(Symbol key)
public java.lang.Float getFloat(java.lang.String key)
public java.lang.Float getFloat(Symbol key)
public GVector getList(java.lang.String key)
public GVector getList(Symbol key)
public GBinary getBinary(java.lang.String key)
public GBinary getBinary(Symbol key)
public void removePropertyVerbatim(Symbol key)
public void removeProperty(Symbol key)
public void removeProperty(java.lang.String key)
public java.util.Enumeration predicateKeys()
public void setPredicate(Predicate p)
public PredicateEnumeration predicates()
public TimePredicateEnumeration timePredicates()
public Predicate getPredicate(Symbol name)
public void removePredicate(Symbol name)
public GFrame copy()
public QSet getTopic()
public void addNameToFrame(Symbol name)
public void addPredicateToFrame(Predicate predicate)
public void addPredicateToTopic(Predicate predicate)
public Predicate findPredicate(java.lang.String name)
public Predicate findPredicate(Symbol name)
public void copyPredicates(GFrame fromFrame)
public void movePredicates(GFrame fromFrame)
public boolean isTime()
public boolean isDate()
public java.lang.String toString()
toString
in class java.lang.Object
public java.lang.StringBuffer toStringBuffer(java.lang.StringBuffer buff)
public java.lang.String toFormattedString()
public java.lang.StringBuffer toFormattedStringBuffer(java.lang.StringBuffer buff, int indent)
public static GFrame parseFrame(java.lang.String frameString) throws java.lang.Exception
public boolean encodeFrame(XdrOutBuffer buffer) throws java.lang.Exception
buffer
- the buffer into which this frame is encodedpublic static boolean encodeObject(XdrOutBuffer buffer, java.lang.Object object) throws java.lang.Exception
buffer
- the buffer into which the is encodedobject
- the object to encodepublic static GFrame decodeFrame(XdrInBuffer buffer)
buffer
- the buffer in which the frame is encodedpublic static java.lang.Object decodeObject(XdrInBuffer buffer) throws java.lang.Exception
buffer
- the buffer in which the object is encoded
|
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