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org.apache.derby.impl.sql.execute
Class FKInfo
java.lang.Objectorg.apache.derby.impl.sql.execute.FKInfo
- All Implemented Interfaces:
- java.io.Externalizable, org.apache.derby.iapi.services.io.Formatable, java.io.Serializable, org.apache.derby.iapi.services.io.TypedFormat
- public class FKInfo
- extends java.lang.Object
- implements org.apache.derby.iapi.services.io.Formatable
- extends java.lang.Object
This is a simple class used to store the run time information about a foreign key. Used by DML to figure out what to check.
| Field Summary | |
int[] |
colArray
|
long[] |
fkConglomNumbers
|
java.lang.String[] |
fkConstraintNames
|
boolean[] |
fkIsSelfReferencing
|
org.apache.derby.catalog.UUID[] |
fkUUIDs
|
static int |
FOREIGN_KEY
This class implements Formatable. |
int[] |
raRules
|
long |
refConglomNumber
|
static int |
REFERENCED_KEY
|
org.apache.derby.catalog.UUID |
refUUID
|
org.apache.derby.iapi.types.RowLocation |
rowLocation
|
int |
stmtType
|
java.lang.String |
tableName
|
int |
type
|
| Constructor Summary | |
FKInfo()
Niladic constructor for Formattable |
|
FKInfo(java.lang.String[] fkConstraintNames,
java.lang.String tableName,
int stmtType,
int type,
org.apache.derby.catalog.UUID refUUID,
long refConglomNumber,
org.apache.derby.catalog.UUID[] fkUUIDs,
long[] fkConglomNumbers,
boolean[] fkIsSelfReferencing,
int[] colArray,
org.apache.derby.iapi.types.RowLocation rowLocation,
int[] raRules)
Consructor for FKInfo |
|
| Method Summary | |
static FKInfo[] |
chooseRelevantFKInfos(FKInfo[] fkInfo,
int[] cols,
boolean addAllTypeIsFK)
Comb through the FKInfo structures and pick out the ones that have columns that intersect with the input columns. |
int |
getTypeFormatId()
Get the formatID which corresponds to this class. |
void |
readExternal(java.io.ObjectInput in)
Read this object from a stream of stored objects. |
java.lang.String |
toString()
Convert this Object to a human-readable String. |
void |
writeExternal(java.io.ObjectOutput out)
Write this object out |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Field Detail |
FOREIGN_KEY
public static final int FOREIGN_KEY
- This class implements Formatable. That means that it
can write itself to and from a formatted stream. If
you add more fields to this class, make sure that you
also write/read them with the writeExternal()/readExternal()
methods.
If, inbetween releases, you add more fields to this class,
then you should bump the version number emitted by the getTypeFormatId()
method. OR, since this is something that is used
in stored prepared statements, it is ok to change it
if you make sure that stored prepared statements are
invalidated across releases.
- See Also:
- Constant Field Values
REFERENCED_KEY
public static final int REFERENCED_KEY
- See Also:
- Constant Field Values
fkConstraintNames
public java.lang.String[] fkConstraintNames
tableName
public java.lang.String tableName
type
public int type
refUUID
public org.apache.derby.catalog.UUID refUUID
refConglomNumber
public long refConglomNumber
fkUUIDs
public org.apache.derby.catalog.UUID[] fkUUIDs
fkConglomNumbers
public long[] fkConglomNumbers
fkIsSelfReferencing
public boolean[] fkIsSelfReferencing
colArray
public int[] colArray
stmtType
public int stmtType
rowLocation
public org.apache.derby.iapi.types.RowLocation rowLocation
raRules
public int[] raRules
| Constructor Detail |
FKInfo
public FKInfo()
- Niladic constructor for Formattable
FKInfo
public FKInfo(java.lang.String[] fkConstraintNames, java.lang.String tableName, int stmtType, int type, org.apache.derby.catalog.UUID refUUID, long refConglomNumber, org.apache.derby.catalog.UUID[] fkUUIDs, long[] fkConglomNumbers, boolean[] fkIsSelfReferencing, int[] colArray, org.apache.derby.iapi.types.RowLocation rowLocation, int[] raRules)
- Consructor for FKInfo
| Method Detail |
chooseRelevantFKInfos
public static FKInfo[] chooseRelevantFKInfos(FKInfo[] fkInfo, int[] cols, boolean addAllTypeIsFK)
- Comb through the FKInfo structures and pick out the
ones that have columns that intersect with the input
columns.
writeExternal
public void writeExternal(java.io.ObjectOutput out) throws java.io.IOException
- Write this object out
- Specified by:
writeExternalin interfacejava.io.Externalizable
readExternal
public void readExternal(java.io.ObjectInput in) throws java.io.IOException, java.lang.ClassNotFoundException
- Read this object from a stream of stored objects.
- Specified by:
readExternalin interfacejava.io.Externalizable
getTypeFormatId
public int getTypeFormatId()
- Get the formatID which corresponds to this class.
- Specified by:
getTypeFormatIdin interfaceorg.apache.derby.iapi.services.io.TypedFormat
toString
public java.lang.String toString()
- Description copied from class:
java.lang.Object - Convert this Object to a human-readable String.
There are no limits placed on how long this String
should be or what it should contain. We suggest you
make it as intuitive as possible to be able to place
it into System.out.println() 55
and such.
It is typical, but not required, to ensure that this method never completes abruptly with a java.lang.RuntimeException.
This method will be called when performing string concatenation with this object. If the result is
null, string concatenation will instead use"null".The default implementation returns
getClass().getName() + "@" + Integer.toHexString(hashCode()).
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SUMMARY: JAVADOC | SOURCE | DOWNLOAD | NESTED | FIELD | CONSTR | METHOD |
DETAIL: FIELD | CONSTR | METHOD | ||||||||