Package scriptella.core

Class QueryExecutor

java.lang.Object

scriptella.core.QueryExecutor

All Implemented Interfaces:

ExecutableElement

public final class QueryExecutor
extends Object

<query> element executor.

Version:

1.0

Author:

Fyodor Kupolov

Field Summary

Fields

Modifier and Type	Field	Description
protected final boolean	debug
protected final Logger	log

Method Summary

Modifier and Type	Method	Description
final void	execute(DynamicContext ctx)	Executes the element.
protected void	execute(Connection connection, Resource resource, DynamicContext ctx)	Executes a script or a query resource using the specified connection.
Resource	getContent(DialectIdentifier dialectIdentifier)	Returns content satisfying dialect information.
QueryEl	getElement()	Returns scripting element specified in constructor
Location	getLocation()	A short for getElement().getLocation()
static ExecutableElement	prepare(QueryEl queryEl)
protected ContentEl	prepareContent(ContentEl content)	Prepares the content for later execution.

Methods inherited from class java.lang.Object

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

Field Details

log

protected final Logger log

debug

protected final boolean debug

Method Details

execute

protected void execute(Connection connection,
 Resource resource,
 DynamicContext ctx)

Executes a script or a query resource using the specified connection.

Parameters:

connection - connection to use for element execution.

resource - query/script content to execute.

ctx - dynamic context to use for variables, etc.

prepare

public static ExecutableElement prepare(QueryEl queryEl)

getElement

public QueryEl getElement()

Returns scripting element specified in constructor

Returns:

scripting element

execute

public final void execute(DynamicContext ctx)

Description copied from interface: ExecutableElement

Executes the element.

Note: the context may be decorated by DynamicContextDecorator.

Specified by:

execute in interface ExecutableElement

Parameters:

ctx - context to use.

getContent

public Resource getContent(DialectIdentifier dialectIdentifier)

Returns content satisfying dialect information.

This method caches contents based on dialects. For now we assume dialectIdentifier is constant for element.

Parameters:

dialectIdentifier - dialect identifier.

Returns:

content for dialect. Not null.

getLocation

public Location getLocation()

A short for getElement().getLocation()

Returns:

element location.

prepareContent

protected ContentEl prepareContent(ContentEl content)

Prepares the content for later execution.

If content is dynamic, i.e. contains includes with bind variables, the properties substitutor is specified, otherwise no properties .

Parameters:

content - content to traverse.

Returns:

the same content object for convenience only.