com.eventgnosis.filters
Class Expression

java.lang.Object
  com.eventgnosis.filters.Expression

All Implemented Interfaces:

EmmlParmBuilder

public class Expression

extends java.lang.Object

implements EmmlParmBuilder

Implements dynamic formating/input of strings, numbers, variables or time(currently only String is implemented).
Allows for the construction of arbitrary strings interspersed with parameter/variable values.

Field Summary

static java.lang.String	DEF_FORMAT_STR
static int	DEF_TYPE
static java.lang.String	DEF_TYPE_STR
static Expression	defExpression
static int	FIRST_TYPE
static int	LAST_TYPE
static int	TYPE_NUMBER
static java.lang.String	TYPE_NUMBER_STR
static int	TYPE_STRING
static java.lang.String	TYPE_STRING_STR
static int	TYPE_TIME
static java.lang.String	TYPE_TIME_STR
static int	TYPE_VARIABLE
static java.lang.String	TYPE_VARIABLE_STR

Constructor Summary

Expression()

Expression(int type, java.lang.String formatString, java.util.ArrayList formatList)

Method Summary

java.lang.String	build(Log log, com.eventgnosis.config.ConfigurationManager configMgr, org.w3c.dom.Element elem) After object is instantiated this method is called to parse the EMML DOM element, setting its internal state to the parsed values.
java.util.ArrayList	buildFormatList(Log log, java.util.ArrayList pList, java.lang.String fmtStr)
java.lang.String	getConfigXml()
static Expression	getDefault()
java.util.ArrayList	getFormatList()
java.lang.String	getFormatString()
java.util.ArrayList	getParmList()
java.lang.String	getRuntimeXml()
java.lang.String	getStringValue(Event ev) Constructs the specified string interspersed with parameter/variable values.
int	getType()
java.lang.String	getTypeAsString()
boolean	isValidType(java.lang.String strType)
void	setFormatList(java.util.ArrayList al)
void	setFormatString(java.lang.String fStr)
void	setParmList(java.util.ArrayList pList)
void	setType(int typ)
void	setType(java.lang.String strType)
java.lang.String	toString()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

DEF_FORMAT_STR

public static final java.lang.String DEF_FORMAT_STR

See Also:

Constant Field Values

DEF_TYPE

public static final int DEF_TYPE

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Constant Field Values

DEF_TYPE_STR

public static final java.lang.String DEF_TYPE_STR

See Also:

Constant Field Values

defExpression

public static final Expression defExpression

FIRST_TYPE

public static final int FIRST_TYPE

See Also:

Constant Field Values

LAST_TYPE

public static final int LAST_TYPE

See Also:

Constant Field Values

TYPE_NUMBER

public static final int TYPE_NUMBER

See Also:

Constant Field Values

TYPE_NUMBER_STR

public static final java.lang.String TYPE_NUMBER_STR

See Also:

Constant Field Values

TYPE_STRING

public static final int TYPE_STRING

See Also:

Constant Field Values

TYPE_STRING_STR

public static final java.lang.String TYPE_STRING_STR

See Also:

Constant Field Values

TYPE_TIME

public static final int TYPE_TIME

See Also:

Constant Field Values

TYPE_TIME_STR

public static final java.lang.String TYPE_TIME_STR

See Also:

Constant Field Values

TYPE_VARIABLE

public static final int TYPE_VARIABLE

See Also:

Constant Field Values

TYPE_VARIABLE_STR

public static final java.lang.String TYPE_VARIABLE_STR

See Also:

Constant Field Values

Constructor Detail

Expression

public Expression()

Expression

public Expression(int type,
                  java.lang.String formatString,
                  java.util.ArrayList formatList)

Method Detail

build

public java.lang.String build(Log log,
                              com.eventgnosis.config.ConfigurationManager configMgr,
                              org.w3c.dom.Element elem)

Description copied from interface: EmmlParmBuilder

After object is instantiated this method is called to parse the EMML DOM element, setting its internal state to the parsed values.

Specified by:

build in interface EmmlParmBuilder

Parameters:

log - logger instance for tracking error, warning and info messages.

configMgr - holds configuration data structure used to properly configure runtime setup based on input ECA(s).

elem - emml(dom) node to be parsed

Returns:

precise error statement if there are any errors; null is returned if there are no errors and object is build sucessfully.

buildFormatList

public java.util.ArrayList buildFormatList(Log log,
                                           java.util.ArrayList pList,
                                           java.lang.String fmtStr)

getConfigXml

public java.lang.String getConfigXml()

getDefault

public static Expression getDefault()

Returns:

default Expression

getFormatList

public java.util.ArrayList getFormatList()

getFormatString

public java.lang.String getFormatString()

getParmList

public java.util.ArrayList getParmList()

getRuntimeXml

public java.lang.String getRuntimeXml()

getStringValue

public java.lang.String getStringValue(Event ev)

Constructs the specified string interspersed with parameter/variable values.

Parameters:

ev - event from witch values may be taken.

Returns:

formated string

getType

public int getType()

Returns:

Expression type as an integer

getTypeAsString

public java.lang.String getTypeAsString()

Returns:

Expression type as a String

isValidType

public boolean isValidType(java.lang.String strType)

setFormatList

public void setFormatList(java.util.ArrayList al)

setFormatString

public void setFormatString(java.lang.String fStr)

setParmList

public void setParmList(java.util.ArrayList pList)

setType

public void setType(int typ)

setType

public void setType(java.lang.String strType)

toString

public java.lang.String toString()