org.restlet.util
Class Template

java.lang.Object
  org.restlet.util.Template

public class Template
extends Object

String template with a pluggable model. Supports both formatting and parsing. The template variables can be inserted using the "{name}" syntax and described using the modifiable map of variable descriptors. When no descriptor is found for a given variable, the template logic uses its default variable property initialized using the default Variable constructor.

Note that the variable descriptors can be changed before the first parsing or matching call. After that point, changes won't be taken into account.

Format and parsing methods are specially available to deal with requests and response. See format(Request, Response) and parse(String, Request).

Author:

Jerome Louvel (contact@noelios.com)

See Also:

Resolver, URI Template specification

Field Summary

static int	MODE_EQUALS
static int	MODE_STARTS_WITH

Constructor Summary

Template(Logger logger, String pattern)
Default constructor.

Template(Logger logger, String pattern, int matchingMode)
Constructor.

Template(Logger logger, String pattern, int matchingMode, int defaultType, String defaultDefaultValue, boolean defaultRequired, boolean defaultFixed)
Constructor.

Template(String pattern)
Default constructor.

Template(String pattern, int matchingMode)
Constructor.

Template(String pattern, int matchingMode, int defaultType, String defaultDefaultValue, boolean defaultRequired, boolean defaultFixed)
Constructor.

Method Summary

String	format(Map<String,Object> values) Creates a formatted string based on the given map of values.
String	format(Request request, Response response) Creates a formatted string based on the given request and response.
String	format(Resolver<String> resolver) Creates a formatted string based on the given variable resolver.
Variable	getDefaultVariable() Returns the default variable.
Logger	getLogger() Returns the logger to use.
int	getMatchingMode() Returns the matching mode to use when parsing a formatted reference.
String	getPattern() Returns the pattern to use for formatting or parsing.
List<String>	getVariableNames() Returns the list of variable names in the template.
Map<String,Variable>	getVariables() Returns the modifiable map of variable descriptors.
int	match(String formattedString) Indicates if the current pattern matches the given formatted string.
int	parse(String formattedString, Map<String,Object> variables) Attempts to parse a formatted reference.
int	parse(String formattedString, Request request) Attempts to parse a formatted reference.
void	setDefaultVariable(Variable defaultVariable) Sets the variable to use, if no variable is given.
void	setLogger(Logger logger) Sets the logger to use.
void	setMatchingMode(int matchingMode) Sets the matching mode to use when parsing a formatted reference.
void	setPattern(String pattern) Sets the pattern to use for formatting or parsing.
void	setVariables(Map<String,Variable> variables) Sets the modifiable map of variables.

Methods inherited from class java.lang.Object

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

Field Detail

MODE_EQUALS

public static final int MODE_EQUALS

See Also:

Constant Field Values

MODE_STARTS_WITH

public static final int MODE_STARTS_WITH

See Also:

Constant Field Values

Constructor Detail

Template

public Template(Logger logger,
                String pattern)

Default constructor. Each variable matches any sequence of characters by default. When parsing, the template will attempt to match the whole template. When formatting, the variable are replaced by an empty string if they don't exist in the model.

Parameters:

logger - The logger to use.

pattern - The pattern to use for formatting or parsing.

Template

public Template(Logger logger,
                String pattern,
                int matchingMode)

Constructor.

Parameters:

logger - The logger to use.

pattern - The pattern to use for formatting or parsing.

matchingMode - The matching mode to use when parsing a formatted reference.

Template

public Template(Logger logger,
                String pattern,
                int matchingMode,
                int defaultType,
                String defaultDefaultValue,
                boolean defaultRequired,
                boolean defaultFixed)

Constructor.

Parameters:

logger - The logger to use.

pattern - The pattern to use for formatting or parsing.

matchingMode - The matching mode to use when parsing a formatted reference.

defaultType - The default type of variables with no descriptor.

defaultDefaultValue - The default value for null variables with no descriptor.

defaultRequired - The default required flag for variables with no descriptor.

defaultFixed - The default fixed value for variables with no descriptor.

Template

public Template(String pattern)

Default constructor. Each variable matches any sequence of characters by default. When parsing, the template will attempt to match the whole template. When formatting, the variable are replaced by an empty string if they don't exist in the model.

Parameters:

pattern - The pattern to use for formatting or parsing.

Template

public Template(String pattern,
                int matchingMode)

Constructor.

Parameters:

pattern - The pattern to use for formatting or parsing.

matchingMode - The matching mode to use when parsing a formatted reference.

Template

public Template(String pattern,
                int matchingMode,
                int defaultType,
                String defaultDefaultValue,
                boolean defaultRequired,
                boolean defaultFixed)

Constructor.

Parameters:

pattern - The pattern to use for formatting or parsing.

matchingMode - The matching mode to use when parsing a formatted reference.

defaultType - The default type of variables with no descriptor.

defaultDefaultValue - The default value for null variables with no descriptor.

defaultRequired - The default required flag for variables with no descriptor.

defaultFixed - The default fixed value for variables with no descriptor.

Method Detail

format

public String format(Map<String,Object> values)

Creates a formatted string based on the given map of values.

Parameters:

values - The values to use when formatting.

Returns:

The formatted string.

See Also:

Resolver.createResolver(Map)

format

public String format(Request request,
                     Response response)

Creates a formatted string based on the given request and response.

Parameters:

request - The request to use as a model.

response - The response to use as a model.

Returns:

The formatted string.

See Also:

Resolver.createResolver(Request, Response)

format

public String format(Resolver<String> resolver)

Creates a formatted string based on the given variable resolver.

Parameters:

resolver - The variable resolver to use.

Returns:

The formatted string.

getDefaultVariable

public Variable getDefaultVariable()

Returns the default variable.

Returns:

The default variable.

getLogger

public Logger getLogger()

Returns the logger to use.

Returns:

The logger to use.

getMatchingMode

public int getMatchingMode()

Returns the matching mode to use when parsing a formatted reference.

Returns:

The matching mode to use when parsing a formatted reference.

getPattern

public String getPattern()

Returns the pattern to use for formatting or parsing.

Returns:

The pattern to use for formatting or parsing.

getVariableNames

public List<String> getVariableNames()

Returns the list of variable names in the template.

Returns:

The list of variable names.

getVariables

public Map<String,Variable> getVariables()

Returns the modifiable map of variable descriptors. Creates a new instance if no one has been set. Note that those variables are only descriptors that can influence the way parsing and formatting is done, they don't contain the actual value parsed.

Returns:

The modifiable map of variables.

match

public int match(String formattedString)

Indicates if the current pattern matches the given formatted string.

Parameters:

formattedString - The formatted string to match.

Returns:

The number of matched characters or -1 if the match failed.

parse

public int parse(String formattedString,
                 Map<String,Object> variables)

Attempts to parse a formatted reference. If the parsing succeeds, the given request's attributes are updated.
Note that the values parsed are directly extracted from the formatted reference and are therefore not percent-decoded.

Parameters:

formattedString - The string to parse.

variables - The map of variables to update.

Returns:

The number of matched characters or -1 if no character matched.

See Also:

Reference.decode(String)

parse

public int parse(String formattedString,
                 Request request)

Attempts to parse a formatted reference. If the parsing succeeds, the given request's attributes are updated.
Note that the values parsed are directly extracted from the formatted reference and are therefore not percent-decoded.

Parameters:

formattedString - The string to parse.

request - The request to update.

Returns:

The number of matched characters or -1 if no character matched.

See Also:

Reference.decode(String)

setDefaultVariable

public void setDefaultVariable(Variable defaultVariable)

Sets the variable to use, if no variable is given.

Parameters:

defaultVariable -

setLogger

public void setLogger(Logger logger)

Sets the logger to use.

Parameters:

logger - The logger to use.

setMatchingMode

public void setMatchingMode(int matchingMode)

Sets the matching mode to use when parsing a formatted reference.

Parameters:

matchingMode - The matching mode to use when parsing a formatted reference.

setPattern

public void setPattern(String pattern)

Sets the pattern to use for formatting or parsing.

Parameters:

pattern - The pattern to use for formatting or parsing.

setVariables

public void setVariables(Map<String,Variable> variables)

Sets the modifiable map of variables.

Parameters:

variables - The modifiable map of variables.