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java.lang.Objectorg.axiondb.engine.commands.BaseAxionCommand
org.axiondb.engine.commands.CheckFileStateCommand
public class CheckFileStateCommand
A CHECKFILESTATE
query. Generates a non-empty ResultSet
if the database's files are accessible, an empty one otherwise.
Constructor Summary | |
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CheckFileStateCommand()
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Method Summary | |
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AxionResultSet |
createFailureResultSet()
|
AxionResultSet |
createSuccessResultSet()
|
boolean |
execute(Database db)
Executes an SQL statement that may return multiple results. |
AxionResultSet |
executeQuery(Database db)
Executes an SQL statement that returns a single read-only ResultSet object such as a SELECT statement. |
int |
executeUpdate(Database database)
Executes an SQL that may add, delete or modify zero or more rows within the database, such as an INSERT, UPDATE or DELETE statement. |
java.lang.String |
toString()
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Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public CheckFileStateCommand()
Method Detail |
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public boolean execute(Database db) throws AxionException
AxionCommand
ResultSet
s were generated,
false otherwise
AxionException
Statement.execute(java.lang.String)
,
PreparedStatement.execute()
public AxionResultSet executeQuery(Database db) throws AxionException
AxionCommand
ResultSet
object such as a SELECT statement.
ResultSet
AxionException
Statement.executeQuery(java.lang.String)
,
PreparedStatement.executeQuery()
public AxionResultSet createSuccessResultSet()
public AxionResultSet createFailureResultSet()
public int executeUpdate(Database database) throws AxionException
AxionCommand
AxionException
Statement.executeUpdate(java.lang.String)
,
PreparedStatement.executeUpdate()
public java.lang.String toString()
toString
in class java.lang.Object
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