Package groovy.sql

Class Sql.AbstractQueryCommand

java.lang.Object
groovy.sql.Sql.AbstractQueryCommand
Enclosing class:
Sql

protected abstract class Sql.AbstractQueryCommand extends Object
  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    protected final String
     
    protected Statement
     
  • Constructor Summary

    Constructors
    Modifier
    Constructor
    Description
    protected
     
  • Method Summary

    Modifier and Type
    Method
    Description
    protected final void
    After performing the execute operation and making use of its return, it's necessary to free the resources allocated for the statement.
    protected final void
    After performing the execute operation and making use of its return, it's necessary to free the resources allocated for the statement.
    protected final ResultSet
    Execute the command that's defined by the subclass following the Command pattern.
    protected int
    Get the maximum number of rows to return in the ResultSet
    protected abstract ResultSet
    runQuery(Connection connection)
    Perform the query.
    protected void
    setMaxRows(int maxRows)
    Set the maximum number of rows to return in the ResultSet

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
  • Field Details

    • sql

      protected final String sql
    • statement

      protected Statement statement
  • Constructor Details

    • AbstractQueryCommand

      protected AbstractQueryCommand(String sql)
  • Method Details

    • execute

      protected final ResultSet execute() throws SQLException
      Execute the command that's defined by the subclass following the Command pattern. Specialized parameters are held in the command instances.
      Returns:
      ResultSet from executing a query
      Throws:
      SQLException - if a database error occurs
    • closeResources

      protected final void closeResources()
      After performing the execute operation and making use of its return, it's necessary to free the resources allocated for the statement.
    • closeResources

      protected final void closeResources(ResultSet rs)
      After performing the execute operation and making use of its return, it's necessary to free the resources allocated for the statement.
      Parameters:
      rs - allows the caller to conveniently close its resource as well
    • runQuery

      protected abstract ResultSet runQuery(Connection connection) throws SQLException
      Perform the query. Must set statement field so that the main (execute()) method can clean up. This is the method that encloses the variant part of the code.
      Parameters:
      connection - the connection to use
      Returns:
      ResultSet from an executeQuery method.
      Throws:
      SQLException - if a database error occurs
    • setMaxRows

      protected void setMaxRows(int maxRows)
      Set the maximum number of rows to return in the ResultSet
      Parameters:
      maxRows - the maximum number of rows
    • getMaxRows

      protected int getMaxRows()
      Get the maximum number of rows to return in the ResultSet
      Returns:
      the maximum number of rows