org.apache.turbine.util.parser
Class DefaultParameterParser

java.lang.Object
  org.apache.turbine.util.pool.RecyclableSupport
      org.apache.turbine.util.parser.BaseValueParser
          org.apache.turbine.util.parser.DefaultParameterParser

All Implemented Interfaces:

ParameterParser, Recyclable, ValueParser

public class DefaultParameterParser

extends BaseValueParser

implements ParameterParser, Recyclable

DefaultParameterParser is a utility object to handle parsing and retrieving the data passed via the GET/POST/PATH_INFO arguments.

NOTE: The name= portion of a name=value pair may be converted to lowercase or uppercase when the object is initialized and when new data is added. This behaviour is determined by the url.case.folding property in TurbineResources.properties. Adding a name/value pair may overwrite existing name=value pairs if the names match:

 ParameterParser pp = data.getParameters();
 pp.add("ERROR",1);
 pp.add("eRrOr",2);
 int result = pp.getInt("ERROR");
 

In the above example, result is 2.

Version:

$Id: DefaultParameterParser.java 280146 2005-09-11 15:40:20Z henning $

Author:

Ilkka Priha, Jon S. Stevens, Sean Legassick, Henning P. Schmiedehausen

Field Summary

Fields inherited from interface org.apache.turbine.util.parser.ValueParser

URL_CASE_FOLDING, URL_CASE_FOLDING_LOWER, URL_CASE_FOLDING_NONE, URL_CASE_FOLDING_UPPER

Constructor Summary

DefaultParameterParser()
Create a new empty instance of ParameterParser.

DefaultParameterParser(java.lang.String characterEncoding)
Create a new empty instance of ParameterParser.

Method Summary

void	add(java.lang.String name, org.apache.commons.fileupload.FileItem item) Add a FileItem object as a parameters.
void	append(java.lang.String name, org.apache.commons.fileupload.FileItem item) Deprecated. Use add(String name, FileItem item)
boolean	containsKey(java.lang.Object key) Determine whether a given key has been inserted.
void	dispose() Disposes the parser.
org.apache.commons.fileupload.FileItem	getFileItem(java.lang.String name) Return a FileItem object for the given name.
protected org.apache.commons.fileupload.FileItem[]	getFileItemParam(java.lang.String name) fetches a key from the parameters map.
org.apache.commons.fileupload.FileItem[]	getFileItems(java.lang.String name) Return an array of FileItem objects for the given name.
javax.servlet.http.HttpServletRequest	getRequest() Gets the parsed servlet request.
protected java.lang.Object[]	getToStringParam(java.lang.String name) This method is only used in toString() and can be used by derived classes to add their local parameters to the toString()
byte[]	getUploadData() Gets the uploadData byte[]
java.util.Set	keySet() Gets the set of keys (FileItems and regular parameters)
protected void	putFileItemParam(java.lang.String name, org.apache.commons.fileupload.FileItem[] value) Puts a key into the parameters map.
void	setRequest(javax.servlet.http.HttpServletRequest request) Sets the servlet request to the parser.
void	setUploadData(byte[] uploadData) Sets the uploadData byte[]

Methods inherited from class org.apache.turbine.util.parser.BaseValueParser

add, add, add, add, add, add, append, clear, containsDateSelectorKeys, containsTimeSelectorKeys, convert, convertAndTrim, get, getBigDecimal, getBigDecimal, getBigDecimals, getBool, getBool, getBoolean, getBoolean, getBooleanObject, getBooleanObject, getByte, getByte, getByteObject, getByteObject, getBytes, getCharacterEncoding, getDate, getDate, getDate, getDouble, getDouble, getDoubleObject, getDoubleObject, getDoubleObjects, getDoubles, getFloat, getFloat, getFloatObject, getFloatObject, getFloatObjects, getFloats, getInt, getInt, getInteger, getInteger, getInteger, getIntegers, getIntObject, getIntObject, getIntObjects, getInts, getKeys, getLong, getLong, getLongObject, getLongObject, getLongObjects, getLongs, getNumberKey, getObject, getObjects, getParam, getString, getString, getStringKey, getStrings, getStrings, keys, putParam, recycle, remove, setCharacterEncoding, setProperties, setProperty, setString, setStrings, toString

Methods inherited from class org.apache.turbine.util.pool.RecyclableSupport

doDispose, isDisposed, Recyclable, recycle

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.turbine.util.parser.ValueParser

add, add, add, add, add, add, append, clear, containsDateSelectorKeys, convert, get, getBigDecimal, getBigDecimal, getBigDecimals, getBool, getBool, getBoolean, getBoolean, getBooleanObject, getBooleanObject, getByte, getByte, getByteObject, getByteObject, getBytes, getCharacterEncoding, getDate, getDate, getDate, getDouble, getDouble, getDoubleObject, getDoubleObject, getDoubleObjects, getDoubles, getFloat, getFloat, getFloatObject, getFloatObject, getFloatObjects, getFloats, getInt, getInt, getInteger, getInteger, getInteger, getIntegers, getIntObject, getIntObject, getIntObjects, getInts, getKeys, getLong, getLong, getLongObject, getLongObject, getLongObjects, getLongs, getNumberKey, getObject, getObjects, getString, getString, getStringKey, getStrings, getStrings, keys, remove, setCharacterEncoding, setProperties, setString, setStrings, toString

Methods inherited from interface org.apache.turbine.util.pool.Recyclable

isDisposed, recycle

Constructor Detail

DefaultParameterParser

public DefaultParameterParser()

Create a new empty instance of ParameterParser. Uses the default character encoding (US-ASCII).

To add name/value pairs to this set of parameters, use the add() methods.

DefaultParameterParser

public DefaultParameterParser(java.lang.String characterEncoding)

Create a new empty instance of ParameterParser. Takes a character encoding name to use when converting strings to bytes.

To add name/value pairs to this set of parameters, use the add() methods.

Parameters:

characterEncoding - The character encoding of strings.

Method Detail

dispose

public void dispose()

Disposes the parser.

Specified by:

dispose in interface Recyclable

Overrides:

dispose in class BaseValueParser

getRequest

public javax.servlet.http.HttpServletRequest getRequest()

Gets the parsed servlet request.

Specified by:

getRequest in interface ParameterParser

Returns:

the parsed servlet request or null.

setRequest

public void setRequest(javax.servlet.http.HttpServletRequest request)

Sets the servlet request to the parser. This requires a valid HttpServletRequest object. It will attempt to parse out the GET/POST/PATH_INFO data and store the data into a Map. There are convenience methods for retrieving the data as a number of different datatypes. The PATH_INFO data must be a URLEncoded() string.

To add name/value pairs to this set of parameters, use the add() methods.

Specified by:

setRequest in interface ParameterParser

Parameters:

request - An HttpServletRequest.

setUploadData

public void setUploadData(byte[] uploadData)

Sets the uploadData byte[]

Specified by:

setUploadData in interface ParameterParser

Parameters:

uploadData - A byte[] with data.

getUploadData

public byte[] getUploadData()

Gets the uploadData byte[]

Specified by:

getUploadData in interface ParameterParser

Returns:

uploadData A byte[] with data.

append

public void append(java.lang.String name,
                   org.apache.commons.fileupload.FileItem item)

Deprecated. Use add(String name, FileItem item)

Add a FileItem object as a parameters. If there are any FileItems already associated with the name, append to the array. The reason for this is that RFC 1867 allows multiple files to be associated with single HTML input element.

Specified by:

append in interface ParameterParser

Parameters:

name - A String with the name.

item - A FileItem with the value.

add

public void add(java.lang.String name,
                org.apache.commons.fileupload.FileItem item)

Add a FileItem object as a parameters. If there are any FileItems already associated with the name, append to the array. The reason for this is that RFC 1867 allows multiple files to be associated with single HTML input element.

Specified by:

add in interface ParameterParser

Parameters:

name - A String with the name.

item - A FileItem with the value.

keySet

public java.util.Set keySet()

Gets the set of keys (FileItems and regular parameters)

Specified by:

keySet in interface ValueParser

Overrides:

keySet in class BaseValueParser

Returns:

A Set of the keys.

containsKey

public boolean containsKey(java.lang.Object key)

Determine whether a given key has been inserted. All keys are stored in lowercase strings, so override method to account for this.

Specified by:

containsKey in interface ValueParser

Overrides:

containsKey in class BaseValueParser

Parameters:

key - An Object with the key to search for.

Returns:

True if the object is found.

getFileItem

public org.apache.commons.fileupload.FileItem getFileItem(java.lang.String name)

Return a FileItem object for the given name. If the name does not exist or the object stored is not a FileItem, return null.

Specified by:

getFileItem in interface ParameterParser

Parameters:

name - A String with the name.

Returns:

A FileItem.

getFileItems

public org.apache.commons.fileupload.FileItem[] getFileItems(java.lang.String name)

Return an array of FileItem objects for the given name. If the name does not exist, return null.

Specified by:

getFileItems in interface ParameterParser

Parameters:

name - A String with the name.

Returns:

An Array of FileItems or null.

putFileItemParam

protected void putFileItemParam(java.lang.String name,
                                org.apache.commons.fileupload.FileItem[] value)

Puts a key into the parameters map. Makes sure that the name is always mapped correctly. This method also enforces the usage of arrays for the parameters.

Parameters:

name - A String with the name.

value - An array of Objects with the values.

getFileItemParam

protected org.apache.commons.fileupload.FileItem[] getFileItemParam(java.lang.String name)

fetches a key from the parameters map. Makes sure that the name is always mapped correctly.

Parameters:

name - A string with the name

Returns:

the value object array or null if not set

getToStringParam

protected java.lang.Object[] getToStringParam(java.lang.String name)

This method is only used in toString() and can be used by derived classes to add their local parameters to the toString()

Overrides:

getToStringParam in class BaseValueParser

Parameters:

name - A string with the name

Returns:

the value object array or null if not set