com.metamatrix.query.sql.lang
Class Drop

java.lang.Object
  com.metamatrix.query.sql.lang.Command
      com.metamatrix.query.sql.lang.Drop

All Implemented Interfaces:

LanguageObject, java.io.Serializable, java.lang.Cloneable

public class Drop
extends Command

Since:

5.5

See Also:

Serialized Form

Field Summary

Fields inherited from class com.metamatrix.query.sql.lang.Command

tempGroupIDs, TYPE_BATCHED_UPDATE, TYPE_CREATE, TYPE_DELETE, TYPE_DROP, TYPE_DYNAMIC, TYPE_INSERT, TYPE_QUERY, TYPE_SQL, TYPE_STORED_PROCEDURE, TYPE_UNKNOWN, TYPE_UPDATE, TYPE_UPDATE_PROCEDURE, TYPE_XQUERY

Constructor Summary

Drop()

Method Summary

void	acceptVisitor(LanguageVisitor visitor) Method for accepting a visitor.
boolean	areResultsCachable() Whether the results are cachable.
java.lang.Object	clone() Implement clone to make objects cloneable.
boolean	equals(java.lang.Object obj)
java.util.List	getProjectedSymbols() Get the ordered list of all elements returned by this query.
GroupSymbol	getTable()
int	getType() Return type of command to make it easier to build switch statements by command type.
int	hashCode()
void	setTable(GroupSymbol table)
java.lang.String	toString() Returns a string representation of an instance of this class.
int	updatingModelCount(QueryMetadataInterface metadata) Return the number of updates on physical sources by this command.

Methods inherited from class com.metamatrix.query.sql.lang.Command

addExternalGroupsToContext, addExternalGroupToContext, copyMetadataState, getAllExternalGroups, getCorrelatedReferences, getExternalGroupContexts, getOption, getProcessorPlan, getSubCommands, getSubCommandsUpdatingModelCount, getSubCommandsUpdatingModelCount, getTemporaryMetadata, getUpdateCommandSymbol, getVirtualGroup, isResolved, printCommandTree, printCommandTree, pushNewResolvingContext, setCorrelatedReferences, setExternalGroupContexts, setIsResolved, setOption, setProcessorPlan, setTemporaryMetadata, setVirtualGroup

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Drop

public Drop()

Method Detail

getTable

public GroupSymbol getTable()

setTable

public void setTable(GroupSymbol table)

getType

public int getType()

Description copied from class: Command

Return type of command to make it easier to build switch statements by command type.

Specified by:

getType in class Command

Returns:

Type from TYPE constants

Since:

5.5

See Also:

Command.getType()

clone

public java.lang.Object clone()

Description copied from interface: LanguageObject

Implement clone to make objects cloneable.

Specified by:

clone in interface LanguageObject

Specified by:

clone in class Command

Returns:

Deep clone of this object

Since:

5.5

See Also:

Command.clone()

getProjectedSymbols

public java.util.List getProjectedSymbols()

Description copied from class: Command

Get the ordered list of all elements returned by this query. These elements may be ElementSymbols or ExpressionSymbols but in all cases each represents a single column.

Specified by:

getProjectedSymbols in class Command

Returns:

Ordered list of SingleElementSymbol

Since:

5.5

See Also:

Command.getProjectedSymbols()

areResultsCachable

public boolean areResultsCachable()

Description copied from class: Command

Whether the results are cachable.

Specified by:

areResultsCachable in class Command

Returns:

True if the results are cachable; false otherwise.

Since:

5.5

See Also:

Command.areResultsCachable()

updatingModelCount

public int updatingModelCount(QueryMetadataInterface metadata)
                       throws MetaMatrixComponentException

Description copied from class: Command

Return the number of updates on physical sources by this command.

Specified by:

updatingModelCount in class Command

Parameters:

metadata - QueryMetadataInterface

Returns:

The number of updates on physical sources by this command.

Throws:

MetaMatrixComponentException

Since:

5.5

See Also:

Command.updatingModelCount(com.metamatrix.query.metadata.QueryMetadataInterface)

acceptVisitor

public void acceptVisitor(LanguageVisitor visitor)

Description copied from interface: LanguageObject

Method for accepting a visitor. It is the responsibility of the language object to call back on the visitor.

Parameters:

visitor - Visitor being used

Since:

5.5

See Also:

LanguageObject.acceptVisitor(com.metamatrix.query.sql.LanguageVisitor)

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Description copied from class: Command

Returns a string representation of an instance of this class.

Overrides:

toString in class Command

Returns:

String representation of object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object