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Préférences
Moteurs de recherche
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JavaTM 2 Platform Std. Ed. v1.6.0
javax.script
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Field Summary | |
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protected Bindings |
engineScope
This is the engine scope bindings. |
protected Writer |
errorWriter
This is the writer to be used to output errors from scripts. |
protected Bindings |
globalScope
This is the global scope bindings. |
protected Reader |
reader
This is the reader to be used for input from scripts. |
protected Writer |
writer
This is the writer to be used to output from scripts. |
Fields inherited from interface javax.script.ScriptContext |
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ENGINE_SCOPE, GLOBAL_SCOPE |
Constructor Summary | |
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SimpleScriptContext()
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Method Summary | |
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Object |
getAttribute(String name)
Retrieves the value of the attribute with the given name in the scope occurring earliest in the search order. |
Object |
getAttribute(String name,
int scope)
Gets the value of an attribute in a given scope. |
int |
getAttributesScope(String name)
Get the lowest scope in which an attribute is defined. |
Bindings |
getBindings(int scope)
Returns the value of the engineScope field if specified scope is
ENGINE_SCOPE . |
Writer |
getErrorWriter()
Returns the Writer used to display error output. |
Reader |
getReader()
Returns a Reader to be used by the script to read
input. |
List<Integer> |
getScopes()
Returns immutable List of all the valid values for
scope in the ScriptContext. |
Writer |
getWriter()
Returns the Writer for scripts to use when displaying output. |
Object |
removeAttribute(String name,
int scope)
Remove an attribute in a given scope. |
void |
setAttribute(String name,
Object value,
int scope)
Sets the value of an attribute in a given scope. |
void |
setBindings(Bindings bindings,
int scope)
Sets a Bindings of attributes for the given scope. |
void |
setErrorWriter(Writer writer)
Sets the Writer used to display error output. |
void |
setReader(Reader reader)
Sets the Reader for scripts to read input
. |
void |
setWriter(Writer writer)
Sets the Writer for scripts to use when displaying output. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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protected Writer writer
PrintWriter
based on System.out
is used. Accessor methods getWriter, setWriter are used to manage
this field.
System.out
,
PrintWriter
protected Writer errorWriter
PrintWriter
based on System.err
is
used. Accessor methods getErrorWriter, setErrorWriter are used to manage
this field.
System.err
,
PrintWriter
protected Reader reader
InputStreamReader
based on System.in
is used and default charset is used by this reader. Accessor methods
getReader, setReader are used to manage this field.
System.in
,
InputStreamReader
protected Bindings engineScope
SimpleBindings
is used. Accessor
methods setBindings, getBindings are used to manage this field.
SimpleBindings
protected Bindings globalScope
Constructor Detail |
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public SimpleScriptContext()
Method Detail |
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public void setBindings(Bindings bindings, int scope)
Bindings
of attributes for the given scope. If the value
of scope is ENGINE_SCOPE
the given Bindings
replaces the
engineScope
field. If the value
of scope is GLOBAL_SCOPE
the given Bindings
replaces the
globalScope
field.
setBindings
in interface ScriptContext
bindings
- The Bindings
of attributes to set.scope
- The value of the scope in which the attributes are set.
IllegalArgumentException
- if scope is invalid.
NullPointerException
- if the value of scope is ENGINE_SCOPE
and
the specified Bindings
is null.public Object getAttribute(String name)
getAttribute
in interface ScriptContext
name
- The name of the the attribute to retrieve.
NullPointerException
- if the name is null.
IllegalArgumentException
- if the name is empty.public Object getAttribute(String name, int scope)
getAttribute
in interface ScriptContext
name
- The name of the attribute to retrieve.scope
- The scope in which to retrieve the attribute.
null
is the name
does not exist in the given scope.
IllegalArgumentException
- if the name is empty or if the value of scope is invalid.
NullPointerException
- if the name is null.public Object removeAttribute(String name, int scope)
removeAttribute
in interface ScriptContext
name
- The name of the attribute to removescope
- The scope in which to remove the attribute
IllegalArgumentException
- if the name is empty or if the scope is invalid.
NullPointerException
- if the name is null.public void setAttribute(String name, Object value, int scope)
setAttribute
in interface ScriptContext
name
- The name of the attribute to setvalue
- The value of the attributescope
- The scope in which to set the attribute
IllegalArgumentException
- if the name is empty or if the scope is invalid.
NullPointerException
- if the name is null.public Writer getWriter()
Writer
for scripts to use when displaying output.
getWriter
in interface ScriptContext
Writer
.public Reader getReader()
Reader
to be used by the script to read
input.
getReader
in interface ScriptContext
Reader
.public void setReader(Reader reader)
Reader
for scripts to read input
.
setReader
in interface ScriptContext
reader
- The new Reader
.public void setWriter(Writer writer)
Writer
for scripts to use when displaying output.
setWriter
in interface ScriptContext
writer
- The new Writer
.public Writer getErrorWriter()
Writer
used to display error output.
getErrorWriter
in interface ScriptContext
Writer
public void setErrorWriter(Writer writer)
Writer
used to display error output.
setErrorWriter
in interface ScriptContext
writer
- The Writer
.public int getAttributesScope(String name)
getAttributesScope
in interface ScriptContext
name
- Name of the attribute
.
NullPointerException
- if name is null.
IllegalArgumentException
- if name is empty.public Bindings getBindings(int scope)
engineScope
field if specified scope is
ENGINE_SCOPE
. Returns the value of the globalScope
field if the specified scope is
GLOBAL_SCOPE
.
getBindings
in interface ScriptContext
scope
- The specified scope
engineScope
or globalScope
field.
IllegalArgumentException
- if the value of scope is invalid.public List<Integer> getScopes()
List
of all the valid values for
scope in the ScriptContext.
getScopes
in interface ScriptContext