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org.vrspace.neurogrid
Class NGObject
java.lang.Objectorg.vrspace.neurogrid.NGObject
- Direct Known Subclasses:
- Event, EventType, Keyword, Node, Predicate, Uri, UriDesc, UriTriple, Weight
- public abstract class NGObject
- extends java.lang.Object
Generic import record.
| Field Summary | |
protected DBAdapter |
db
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protected long |
db_id
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| Constructor Summary | |
protected |
NGObject()
Constructor intended for subclasses which use more atributes than id and name. |
| Method Summary | |
java.lang.String |
deleteStatement()
delete from tablename where db_id = this.db_id |
java.util.Iterator |
fieldIterator()
Returns Iterator thru public fields. |
protected java.util.Iterator |
fieldIterator(java.lang.reflect.Field[] fields)
|
NGObject |
fromText(java.io.Reader in)
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java.lang.String |
getID()
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java.lang.String |
getTable()
Returns table name. |
void |
init()
This initializes NGObject. |
java.lang.String |
insertStatement()
insert into tablename (field,...) values (value,...) |
abstract NGObject |
next()
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java.lang.String |
nullify(java.lang.Object val)
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java.lang.String |
stringify(java.lang.Object val)
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java.lang.String |
stringify(java.lang.String name,
java.lang.Object val)
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java.lang.String |
toString()
Returns string containing id and name of this record |
java.lang.String |
toText()
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java.lang.String |
updateStatement()
update tablename set field=value,... |
protected void |
verify()
Check if exists in database, update in-memory db_id if so |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Field Detail |
db_id
protected long db_id
db
protected DBAdapter db
| Constructor Detail |
NGObject
protected NGObject()
- Constructor intended for subclasses which use more atributes than id and name.
| Method Detail |
toString
public java.lang.String toString()
- Returns string containing id and name of this record
init
public void init()
- This initializes NGObject. Called when loads from the database, all field values are set.
Used to construct whatever maps/sets this object belongs to.
NOTE: this may not be necessary for NG, it's a bit more general model
getID
public java.lang.String getID()
fieldIterator
public java.util.Iterator fieldIterator()
- Returns Iterator thru public fields. Iterator returns Map.Entry objects, key is Field, value is field value.
fieldIterator
protected java.util.Iterator fieldIterator(java.lang.reflect.Field[] fields)
nullify
public java.lang.String nullify(java.lang.Object val)
stringify
public java.lang.String stringify(java.lang.Object val)
stringify
public java.lang.String stringify(java.lang.String name, java.lang.Object val)
insertStatement
public java.lang.String insertStatement()
- insert into tablename (field,...) values (value,...)
updateStatement
public java.lang.String updateStatement()
- update tablename set field=value,... where db_id = this.db_id
deleteStatement
public java.lang.String deleteStatement()
- delete from tablename where db_id = this.db_id
toText
public java.lang.String toText()
fromText
public NGObject fromText(java.io.Reader in)
getTable
public java.lang.String getTable()
- Returns table name. Implement where one class maps to one table, field to field, otherwise override insert/update/deleteStatement()
next
public abstract NGObject next()
verify
protected void verify()
- Check if exists in database, update in-memory db_id if so
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SUMMARY: JAVADOC | SOURCE | DOWNLOAD | NESTED | FIELD | CONSTR | METHOD |
DETAIL: FIELD | CONSTR | METHOD | ||||||||