Java Doc for Command.java in  » Database-DBMS » h2database » org » h2 » command » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » h2database » org.h2.command   Source Cross Reference   Class Diagram   Java Document (Java Doc)   java.lang.Object    org.h2.command.Command All known Subclasses:   org.h2.command.CommandList,  org.h2.command.CommandContainer, Command abstract public class Command implements CommandInterface(Code) Represents a SQL statement. This object is only used on the server side. Field Summary final protected  Session session      The session. protected  long startTime      The last start time. final protected  Trace trace      The trace module. Constructor Summary public   Command(Parser parser, String sql)      Method Summary public  void cancel()      public  void checkCancelled()      Check if this command has been cancelled, and throw an exception if yes. public  void close()      public  ResultInterface executeQuery(int maxrows, boolean scrollable)      public  LocalResult executeQueryLocal(int maxrows)      Execute a query and return a local result set. public  int executeUpdate()      final public  ResultInterface getMetaData()      final public  LocalResult getMetaDataLocal()      abstract public  ObjectArray getParameters()      Get the list of parameters. abstract public  boolean isQuery()      Check if this command is a query. abstract public  boolean isReadOnly()      Check if this command is read only. abstract public  boolean isTransactional()      Check if this command is transactional. public  LocalResult query(int maxrows)      Execute a query statement, if this is possible. abstract public  LocalResult queryMeta()      Get an empty result set containing the meta data. protected  void start()      public  String toString()      public  int update()      Execute an updating statement, if this is possible. Field Detail session final protected Session session(Code) The session. startTime protected long startTime(Code) The last start time. trace final protected Trace trace(Code) The trace module. Constructor Detail Command public Command(Parser parser, String sql)(Code) Method Detail cancel public void cancel()(Code) checkCancelled public void checkCancelled() throws SQLException(Code) Check if this command has been cancelled, and throw an exception if yes. throws:   SQLException - if the statement has been cancelled close public void close()(Code) executeQuery public ResultInterface executeQuery(int maxrows, boolean scrollable) throws SQLException(Code) executeQueryLocal public LocalResult executeQueryLocal(int maxrows) throws SQLException(Code) Execute a query and return a local result set. This method prepares everything and calls Command.query(int) finally. Parameters:   maxrows - the maximum number of rows to return the local result set executeUpdate public int executeUpdate() throws SQLException(Code) getMetaData final public ResultInterface getMetaData() throws SQLException(Code) getMetaDataLocal final public LocalResult getMetaDataLocal() throws SQLException(Code) getParameters abstract public ObjectArray getParameters()(Code) Get the list of parameters. the list of parameters isQuery abstract public boolean isQuery()(Code) Check if this command is a query. true if it is isReadOnly abstract public boolean isReadOnly()(Code) Check if this command is read only. true if it is isTransactional abstract public boolean isTransactional()(Code) Check if this command is transactional. If it is not, then it forces the current transaction to commit. true if it is query public LocalResult query(int maxrows) throws SQLException(Code) Execute a query statement, if this is possible. Parameters:   maxrows - the maximum number of rows returned the local result set throws:   SQLException - if the command is not a query queryMeta abstract public LocalResult queryMeta() throws SQLException(Code) Get an empty result set containing the meta data. an empty result set start protected void start()(Code) toString public String toString()(Code) update public int update() throws SQLException(Code) Execute an updating statement, if this is possible. the update count throws:   SQLException - if the command is not an updating statement Methods inherited from java.lang.Object native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc) public boolean equals(Object obj)(Code)(Java Doc) protected void finalize() throws Throwable(Code)(Java Doc) final native public Class getClass()(Code)(Java Doc) native public int hashCode()(Code)(Java Doc) final native public void notify()(Code)(Java Doc) final native public void notifyAll()(Code)(Java Doc) public String toString()(Code)(Java Doc) final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc) final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc) final public void wait() throws InterruptedException(Code)(Java Doc)