org.trimou.engine.context

Class AbstractExecutionContext

java.lang.Object

org.trimou.engine.context.AbstractExecutionContext

All Implemented Interfaces:

ExecutionContext

Direct Known Subclasses:

DefaultExecutionContext

public abstract class AbstractExecutionContext
extends Object
implements ExecutionContext

Abstract execution context.

Author:

Martin Kouba

Field Summary

Fields

Modifier and Type	Field and Description
protected Deque<Object>	contextObjectStack LIFO stack of context objects
protected Map<String,ExtendSectionSegment>	definingSections Map of defining/overriding sections
protected List<Resolver>	resolvers Immutable ordered list of resolvers

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractExecutionContext(List<Resolver> resolvers)

Method Summary

Methods

Modifier and Type	Method and Description
void	addDefiningSection(String name, ExtendSectionSegment segment) Associate the specified defining section with the context, but only if no defining section with the same name is associated.
ExtendSectionSegment	getDefiningSection(String name)
protected boolean	isCompoundKey(String key)
Object	pop() Removes the context object at the top of context stack.
void	push(Object contextObject) Push the context object on the context stack.
protected Object	resolve(Object contextObject, String name)
protected Object	resolveLeadingContextObject(String name) Resolve the leading context object (the first part of the key).
protected String[]	splitKey(String key)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.trimou.engine.context.ExecutionContext

getValue

Field Detail

resolvers

protected List<Resolver> resolvers

Immutable ordered list of resolvers

contextObjectStack

protected Deque<Object> contextObjectStack

LIFO stack of context objects

definingSections

protected Map<String,ExtendSectionSegment> definingSections

Map of defining/overriding sections

Constructor Detail

AbstractExecutionContext

protected AbstractExecutionContext(List<Resolver> resolvers)

Parameters:

resolvers -

Method Detail

push

public void push(Object contextObject)

Description copied from interface: ExecutionContext

Push the context object on the context stack.

Specified by:

push in interface ExecutionContext

pop

public Object pop()

Description copied from interface: ExecutionContext

Removes the context object at the top of context stack.

Specified by:

pop in interface ExecutionContext

Returns:

the removed context object

addDefiningSection

public void addDefiningSection(String name,
                      ExtendSectionSegment segment)

Description copied from interface: ExecutionContext

Associate the specified defining section with the context, but only if no defining section with the same name is associated.

Specified by:

addDefiningSection in interface ExecutionContext

See Also:

ExtendSegment

getDefiningSection

public ExtendSectionSegment getDefiningSection(String name)

Specified by:

getDefiningSection in interface ExecutionContext

Returns:

the defining section with the specified name or null if no such associated with the context

See Also:

ExtendSegment

resolveLeadingContextObject

protected Object resolveLeadingContextObject(String name)

Resolve the leading context object (the first part of the key). E.g. foo in {{foo.bar.name}} may identify a property of some context object on the stack (passed data, section iteration, nested context, ...), or some context and data unrelated object (e.g. CDI bean).

Parameters:

name -

Returns:

the resolved leading context object

resolve

protected Object resolve(Object contextObject,
             String name)

Parameters:

contextObject -

name -

Returns:

the resolved object

isCompoundKey

protected boolean isCompoundKey(String key)

splitKey

protected String[] splitKey(String key)