org.openanzo.model.transaction.impl
Class TransactionCommand

java.lang.Object
  org.openanzo.model.transaction.impl.TransactionCommand

All Implemented Interfaces:

ITransactionCommand

Direct Known Subclasses:

RDBPersistedCommand

public class TransactionCommand
extends java.lang.Object
implements ITransactionCommand

Standard implementation of ICommand, consisting of a set of NamedGraphChangeSets for the affected graphs.

Author:

Matthew Roy ( mroy@cambridgesemantics.com )

Constructor Summary

TransactionCommand(ITransaction parentTransaction)
Create a new command without a type

TransactionCommand(ITransaction parentTransaction, java.lang.String commandType, java.util.Set<IPrecondition> preconditions)
Create a new command with given type, preconditions and context

Method Summary

void	addStatementAddition(org.openrdf.model.Statement... statements) Add statements to additions for the current command
void	addStatementRemoval(org.openrdf.model.Statement... statements) Add statements to deleted for the current command
void	delete() Delete the command from its store.
void	filter(java.util.Collection<org.openrdf.model.Statement> results, org.openrdf.model.Resource s, org.openrdf.model.URI p, org.openrdf.model.Value o, org.openrdf.model.Resource... context) Use contents of this command to filter the statements contained within the results collection
java.util.Collection<org.openrdf.model.URI>	getAdditionContexts() Get the set of contexts affected by additions within this command
java.util.Collection<org.openrdf.model.Statement>	getAdditions() Get the set of additions within this command
java.lang.String	getCommandType() Get the type name for the command.
java.util.Collection<org.openrdf.model.URI>	getDeletionContexts() Get the set of contexts affected by deletions within this command
java.util.Collection<org.openrdf.model.Statement>	getDeletions() Get the set of deletions within this command
ITransaction	getParentTransaction() Get the parent transaction for this command.
java.util.Set<IPrecondition>	getPreconditions() Get the set of preconditions for this command.
boolean	isEmpty() Determine if this command has any additions or deletions
void	save() Save the command to its store.
void	setCommandType(java.lang.String commandType) Set the type name for this command.
void	setParentTransaction(ITransaction parentTransaction) Set the parent transaction for this command.
void	setPreconditions(java.util.Set<IPrecondition> preconditions) Set this commands preconditions to the given set.
int	sizeAdditions() Get the size of additions within this command
int	sizeAdditions(org.openrdf.model.Resource... context) Get the size of additions within this command for the given contexts
int	sizeDeletions() Get the size of deletions within this command
int	sizeDeletions(org.openrdf.model.Resource... context) Get the size of deletions for the given contexts

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TransactionCommand

public TransactionCommand(ITransaction parentTransaction,
                          java.lang.String commandType,
                          java.util.Set<IPrecondition> preconditions)

Create a new command with given type, preconditions and context

Parameters:

parentTransaction - Parent Transaction

commandType - Type of command

preconditions - Set of preconditions for command

TransactionCommand

public TransactionCommand(ITransaction parentTransaction)

Create a new command without a type

Parameters:

parentTransaction - Parent transaction

Method Detail

getCommandType

public java.lang.String getCommandType()

Description copied from interface: ITransactionCommand

Get the type name for the command.

Specified by:

getCommandType in interface ITransactionCommand

Returns:

The command's type String.

setCommandType

public void setCommandType(java.lang.String commandType)

Description copied from interface: ITransactionCommand

Set the type name for this command.

Specified by:

setCommandType in interface ITransactionCommand

Parameters:

commandType - Command's type String

filter

public void filter(java.util.Collection<org.openrdf.model.Statement> results,
                   org.openrdf.model.Resource s,
                   org.openrdf.model.URI p,
                   org.openrdf.model.Value o,
                   org.openrdf.model.Resource... context)

Description copied from interface: ITransactionCommand

Use contents of this command to filter the statements contained within the results collection

Specified by:

filter in interface ITransactionCommand

Parameters:

results - The collection to overlay with the additions and deletions within this transaction.

s - The subject of the statement pattern being searched on.

p - The property of the statement pattern being searched on.

o - The object of the statement pattern being searched on.

context - The contexts of the statement pattern being searched on.

addStatementAddition

public void addStatementAddition(org.openrdf.model.Statement... statements)

Description copied from interface: ITransactionCommand

Add statements to additions for the current command

Specified by:

addStatementAddition in interface ITransactionCommand

Parameters:

statements - Added Statements to add to command

addStatementRemoval

public void addStatementRemoval(org.openrdf.model.Statement... statements)

Description copied from interface: ITransactionCommand

Add statements to deleted for the current command

Specified by:

addStatementRemoval in interface ITransactionCommand

Parameters:

statements - Deleted Statements to add to command

delete

public void delete()
            throws AnzoException

Description copied from interface: ITransactionCommand

Delete the command from its store.

Specified by:

delete in interface ITransactionCommand

Throws:

AnzoException - if there is an error deleting command

save

public void save()
          throws AnzoException

Description copied from interface: ITransactionCommand

Save the command to its store.

Specified by:

save in interface ITransactionCommand

Throws:

AnzoException - if there is an error saving command

isEmpty

public boolean isEmpty()

Description copied from interface: ITransactionCommand

Determine if this command has any additions or deletions

Specified by:

isEmpty in interface ITransactionCommand

Returns:

True if this command has any additions or deletions

getParentTransaction

public ITransaction getParentTransaction()

Description copied from interface: ITransactionCommand

Get the parent transaction for this command.

Specified by:

getParentTransaction in interface ITransactionCommand

Returns:

the parent transaction for this command.

setParentTransaction

public void setParentTransaction(ITransaction parentTransaction)

Description copied from interface: ITransactionCommand

Set the parent transaction for this command.

Specified by:

setParentTransaction in interface ITransactionCommand

getPreconditions

public java.util.Set<IPrecondition> getPreconditions()

Description copied from interface: ITransactionCommand

Get the set of preconditions for this command.

Specified by:

getPreconditions in interface ITransactionCommand

Returns:

the set of preconditions for this command.

See Also:

IPrecondition

setPreconditions

public void setPreconditions(java.util.Set<IPrecondition> preconditions)

Description copied from interface: ITransactionCommand

Set this commands preconditions to the given set.

Specified by:

setPreconditions in interface ITransactionCommand

Parameters:

preconditions - Set of preconditions that are evaluated on the server

getAdditions

public java.util.Collection<org.openrdf.model.Statement> getAdditions()

Description copied from interface: ITransactionCommand

Get the set of additions within this command

Specified by:

getAdditions in interface ITransactionCommand

Returns:

the set of additions within this command

getDeletions

public java.util.Collection<org.openrdf.model.Statement> getDeletions()

Description copied from interface: ITransactionCommand

Get the set of deletions within this command

Specified by:

getDeletions in interface ITransactionCommand

Returns:

the set of deletions within this command

sizeAdditions

public int sizeAdditions(org.openrdf.model.Resource... context)

Description copied from interface: ITransactionCommand

Get the size of additions within this command for the given contexts

Specified by:

sizeAdditions in interface ITransactionCommand

Parameters:

context - Contexts to determine size

Returns:

the size of additions within this command for the given contexts

sizeDeletions

public int sizeDeletions(org.openrdf.model.Resource... context)

Description copied from interface: ITransactionCommand

Get the size of deletions for the given contexts

Specified by:

sizeDeletions in interface ITransactionCommand

Parameters:

context - Contexts to determine size

Returns:

the size of deletions for the given contexts

sizeAdditions

public int sizeAdditions()

Description copied from interface: ITransactionCommand

Get the size of additions within this command

Specified by:

sizeAdditions in interface ITransactionCommand

Returns:

the size of additions within this command

sizeDeletions

public int sizeDeletions()

Description copied from interface: ITransactionCommand

Get the size of deletions within this command

Specified by:

sizeDeletions in interface ITransactionCommand

Returns:

the size of deletions within this command

getAdditionContexts

public java.util.Collection<org.openrdf.model.URI> getAdditionContexts()

Description copied from interface: ITransactionCommand

Get the set of contexts affected by additions within this command

Specified by:

getAdditionContexts in interface ITransactionCommand

Returns:

the set of contexts affected by additions within this command

getDeletionContexts

public java.util.Collection<org.openrdf.model.URI> getDeletionContexts()

Description copied from interface: ITransactionCommand

Get the set of contexts affected by deletions within this command

Specified by:

getDeletionContexts in interface ITransactionCommand

Returns:

the set of contexts affected by deletions within this command