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java.lang.Objectorg.jpox.store.rdbms.key.Key
org.jpox.store.rdbms.key.CandidateKey
Representation of a Candidate key. This represents a UNIQUE key on a column or columns.
Field Summary | |
protected java.util.List |
columns
Columns that the key relates to. |
protected java.lang.String |
name
Name of the key. |
protected DatastoreContainerObject |
table
Table that the key applies to. |
Constructor Summary | |
CandidateKey(DatastoreContainerObject table)
Constructor. |
Method Summary | |
void |
addDatastoreField(DatastoreField col)
Class to add a column to the key |
protected void |
assertSameDatastoreObject(DatastoreField col)
Utility to assert if the column is for a different table. |
boolean |
equals(java.lang.Object obj)
Equality operator. |
java.lang.String |
getColumnList()
Accessor for the column list |
static java.lang.String |
getColumnList(java.util.Collection cols)
Method to return the list of columns which the key applies to. |
java.util.List |
getColumns()
Accessor for the columns that the key relates to. |
DatastoreContainerObject |
getDatastoreContainerObject()
Accessor for the table |
java.lang.String |
getName()
Accessor for the key name. |
int |
hashCode()
Hashcode operator. |
void |
setDatastoreField(int seq,
DatastoreField col)
Mutator for the column spec, to add/change a column. |
protected static void |
setMinSize(java.util.List list,
int size)
|
void |
setName(java.lang.String name)
Mutator for the key name. |
int |
size()
Accessor for the size. |
boolean |
startsWith(org.jpox.store.rdbms.key.Key key)
Check if this starts with the same columns specified in key . |
java.lang.String |
toString()
Stringify method. |
Methods inherited from class java.lang.Object |
clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
Field Detail |
protected java.lang.String name
protected DatastoreContainerObject table
protected java.util.List columns
Constructor Detail |
public CandidateKey(DatastoreContainerObject table)
table
- Table to apply this key toMethod Detail |
public void setDatastoreField(int seq, DatastoreField col)
seq
- Sequence number of the columncol
- The columnpublic int size()
public boolean equals(java.lang.Object obj)
obj
- The object to compare against
public java.lang.String toString()
public java.lang.String getName()
public DatastoreContainerObject getDatastoreContainerObject()
public java.util.List getColumns()
public java.lang.String getColumnList()
public void addDatastoreField(DatastoreField col)
col
- The column to addpublic boolean startsWith(org.jpox.store.rdbms.key.Key key)
key
.
key
- the Key (may be multiple number of columns)
key
public void setName(java.lang.String name)
name
- The key nameprotected void assertSameDatastoreObject(DatastoreField col)
col
- The column to compare withpublic int hashCode()
protected static void setMinSize(java.util.List list, int size)
public static java.lang.String getColumnList(java.util.Collection cols)
cols
- The columns.
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