com.taggercat.util
Class ELFunctions

java.lang.Object
  com.taggercat.util.ELFunctions

public class ELFunctions
extends java.lang.Object

This class includes extension functions for TaggerCat's EL.

Field Summary

static long	MILLISECONDS_PER_DAY Number of milliseconds for 1 day (86400000).
static long	MILLISECONDS_PER_HOUR Number of milliseconds for 1 hour.
static long	MILLISECONDS_PER_MINUTE Number of milliseconds for 1 minute (60000).
static long	MILLISECONDS_PER_SECOND Number of milliseconds for 1 second (1000).
static long	MILLISECONDS_PER_WEEK Number of milliseconds for 1 week (604800000).

Constructor Summary

ELFunctions()

Method Summary

static java.lang.String	ageAsString(java.util.Date fromDate) Returns a string representation of the delta time.
static java.lang.String	autoFilterValue(com.taggercat.el.ELContext elContext, java.lang.String dsn, java.lang.String propertyName) Returns the current auto-filter on the specified DSN and property Name.
static java.lang.Double	avg(com.taggercat.el.ELContext elContext, java.lang.String dsnPropertyName)
static java.lang.Double	avg(com.taggercat.el.ELContext elContext, java.lang.String dsn, java.lang.String propertyName) Gets the average of properties from the named DS and property
static java.lang.Double	avg(com.taggercat.el.ELContext elContext, java.lang.String dsn, java.lang.String propertyName, java.lang.String predicate) Gets the average of properties from the named DS and property name that match the predicate expression.
static java.lang.Integer	count(com.taggercat.el.ELContext elContext, java.lang.String dsn, java.lang.String predicate) Gets a count of records in the data source that match the predicate expression.
static TCEntity	currentEntity(com.taggercat.el.ELContext elContext, java.lang.String dsn) Returns the current TCEntity ( the one after the current TCEntity ) in the named ds.
static java.lang.String	dataFieldUID(com.taggercat.el.ELContext elContext, java.lang.String dsn, java.lang.String propertyName)
static java.lang.String	dataFieldUID(java.lang.String dsn, java.lang.String propertyName) Return the UID of the specified property and datasource; used in JSP EL Functions
static java.lang.Object	dataValue(TCEntity entity, java.lang.String propertyName) Returns the value of the named property on the specified entity.
static DataSource	ds(com.taggercat.el.ELContext elContext, java.lang.String dsn) Returns the named data source if it exists; otherwise null.
static java.lang.String	dsQbfValue(com.taggercat.el.ELContext elContext, java.lang.String dsnPropertyName) Returns the current QBF value for the named data source and property if it exists; otherwise null.
static java.lang.String	dsQbfValue(java.lang.String dsnPropertyName) Returns the current QBF value for the named data source and property if it exists; otherwise null.
static java.lang.Boolean	empty(com.taggercat.el.ELContext elContext, java.lang.String dsn) Returns true if the named data source is empty ( has no rows ).
static java.lang.String	encryptPassword(java.lang.String password) Returns the encrypted version of the specified password value.
static java.lang.String	extendedProperty(com.taggercat.el.ELContext elContext, java.lang.String entityName, java.lang.String extendedPropertyName) Returns the extended property on the named entityName.
static java.lang.String	extendedProperty(com.taggercat.el.ELContext elContext, java.lang.String entityName, java.lang.String propertyName, java.lang.String extendedPropertyName) Returns the extended property on the named entityName and propertyName.
static TCEntity	findFirst(com.taggercat.el.ELContext elContext, java.lang.String dsn, java.lang.String predicate) Finds the first entity in the data source that match the predicate expression.
static com.taggercat.el.ELContext	getELContext()
static java.lang.Object	getSQLValue(com.taggercat.el.ELContext elContext, java.lang.String sql) Executes an arbitrary SQL statement and returns the value from the first column of the first result row.
static com.taggercat.metadata.MetaDataReader	getTenantMetaData()
static java.lang.Object	getTenantObject(java.lang.String key)
static TCEntity	getUniqueResult(com.taggercat.el.ELContext elContext, java.lang.String hql) Executes an arbitrary HQL statement and returns the unique entity instance.
static java.lang.Object	getUserSetting(java.lang.String name)
static java.lang.Object	getUserSetting(java.lang.String name, java.lang.Object defaultValue)
static java.lang.Boolean	hasPermission(com.taggercat.el.ELContext elContext, java.lang.String dataAction, java.lang.String entityName) Returns true of the current user has the specified action permission on the named entity.
static java.lang.Boolean	hasPermission(com.taggercat.el.ELContext elContext, java.lang.String dataAction, java.lang.String entityName, java.lang.String propertyName) Returns true of the current user has the specified action permission on the named entity.
static java.lang.Boolean	hasUnsavedChanges(com.taggercat.el.ELContext elContext, java.lang.String dsn) Returns true if there are unsaved changes on the specified data source.
static java.lang.Boolean	isGroupMember(com.taggercat.el.ELContext elContext, java.lang.String groupNames) Returns true if the current user is a member of one of the group names.
static java.lang.Boolean	isUserInRole(com.taggercat.el.ELContext elContext, java.lang.String roleNames) Returns true if the user is a member of the specified role ( group ) name.
static java.util.List<java.lang.Object>	list(com.taggercat.el.ELContext elContext, java.lang.String dsn, java.lang.String propertyName, java.lang.String predicate) Gets a list of properties values from the named DS and property name that match the expression.
static java.lang.Double	max(com.taggercat.el.ELContext elContext, java.lang.String dsnPropertyName)
static java.lang.Double	max(com.taggercat.el.ELContext elContext, java.lang.String dsn, java.lang.String propertyName) Gets the max of properties from the named DS and property
static java.lang.Double	max(com.taggercat.el.ELContext elContext, java.lang.String dsn, java.lang.String propertyName, java.lang.String predicate) Gets the max of property values from the named DS and property name that match the predicate expression.
static java.lang.Double	max(java.lang.Number a, java.lang.Number b) The max of the two Number values.
static java.lang.Double	min(com.taggercat.el.ELContext elContext, java.lang.String dsnPropertyName)
static java.lang.Double	min(com.taggercat.el.ELContext elContext, java.lang.String dsn, java.lang.String propertyName) Gets the minimum of properties from the named DS and property
static java.lang.Double	min(com.taggercat.el.ELContext elContext, java.lang.String dsn, java.lang.String propertyName, java.lang.String predicate) Gets the min of property values from the named DS and property name that match the predicate expression.
static java.lang.Double	min(java.lang.Number a, java.lang.Number b) The min of the two Number values.
static TCEntity	nextEntity(com.taggercat.el.ELContext elContext, java.lang.String dsn) Returns the next TCEntity ( the one after the current TCEntity ) in the named ds.
static double	roundDouble(double d, int places)
static java.lang.Integer	rowCount(com.taggercat.el.ELContext elContext, java.lang.String dsn) Returns the number of rows in the data source.
static java.lang.Double	sum(com.taggercat.el.ELContext elContext, java.lang.String dsnPropertyName)
static java.lang.Double	sum(com.taggercat.el.ELContext elContext, java.lang.String dsn, java.lang.String propertyName) Gets the sum of properties from the named DS and property
static java.lang.Double	sum(com.taggercat.el.ELContext elContext, java.lang.String dsn, java.lang.String propertyName, java.lang.String predicate) Gets the sum of properties from the named DS and property name that match the predicate expression.
static java.lang.String	tenantName()
static void	updateProperty(com.taggercat.el.ELContext elContext, java.lang.String dsn, java.lang.String propertyName, java.lang.Object newValue) Sets a property on the current entity in the data source
static long	userId(com.taggercat.el.ELContext elContext) Returns the current user id.
static java.lang.String	userName(com.taggercat.el.ELContext elContext) Returns the current user name.
static java.lang.Boolean	validExpression(com.taggercat.el.ELContext elContext, java.lang.String expression) This function is used to validate the syntax of the expression string.

Methods inherited from class java.lang.Object

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

Field Detail

MILLISECONDS_PER_SECOND

public static final long MILLISECONDS_PER_SECOND

Number of milliseconds for 1 second (1000).

See Also:

Constant Field Values

MILLISECONDS_PER_MINUTE

public static final long MILLISECONDS_PER_MINUTE

Number of milliseconds for 1 minute (60000).

See Also:

Constant Field Values

MILLISECONDS_PER_HOUR

public static final long MILLISECONDS_PER_HOUR

Number of milliseconds for 1 hour.

See Also:

Constant Field Values

MILLISECONDS_PER_DAY

public static final long MILLISECONDS_PER_DAY

Number of milliseconds for 1 day (86400000).

See Also:

Constant Field Values

MILLISECONDS_PER_WEEK

public static final long MILLISECONDS_PER_WEEK

Number of milliseconds for 1 week (604800000).

See Also:

Constant Field Values

Constructor Detail

ELFunctions

public ELFunctions()

Method Detail

ds

public static DataSource ds(com.taggercat.el.ELContext elContext,
                            java.lang.String dsn)
                     throws com.taggercat.el.ParseException

Returns the named data source if it exists; otherwise null.

Throws:

com.taggercat.el.ParseException

Parameters:

elContext - the EL context

dsn - the data source name

Returns:

DataSource instance if it exists

dsQbfValue

public static java.lang.String dsQbfValue(java.lang.String dsnPropertyName)
                                   throws com.taggercat.el.ParseException

Returns the current QBF value for the named data source and property if it exists; otherwise null.

Throws:

com.taggercat.el.ParseException

Parameters:

dsnPropertyName - the dot delimited data source and property name

Returns:

the current QBF value for the specified property

dsQbfValue

public static java.lang.String dsQbfValue(com.taggercat.el.ELContext elContext,
                                          java.lang.String dsnPropertyName)
                                   throws com.taggercat.el.ParseException

Returns the current QBF value for the named data source and property if it exists; otherwise null.

Throws:

com.taggercat.el.ParseException

Parameters:

elContext - the EL context

dsnPropertyName - the dot delimited data source and property name

Returns:

the current QBF value for the specified property

empty

public static java.lang.Boolean empty(com.taggercat.el.ELContext elContext,
                                      java.lang.String dsn)
                               throws com.taggercat.el.ParseException

Returns true if the named data source is empty ( has no rows ).

Throws:

com.taggercat.el.ParseException

Parameters:

elContext - the EL context

dsn - the data source name

Returns:

true if the named data source is empty ( has no rows )

dataValue

public static java.lang.Object dataValue(TCEntity entity,
                                         java.lang.String propertyName)

Returns the value of the named property on the specified entity.

Parameters:

entity - the entity instance

propertyName - the property name

Returns:

the value of the named property on the specified entity

dataFieldUID

public static java.lang.String dataFieldUID(com.taggercat.el.ELContext elContext,
                                            java.lang.String dsn,
                                            java.lang.String propertyName)
                                     throws com.taggercat.el.ParseException

Throws:

com.taggercat.el.ParseException

dataFieldUID

public static java.lang.String dataFieldUID(java.lang.String dsn,
                                            java.lang.String propertyName)

Return the UID of the specified property and datasource; used in JSP EL Functions

Parameters:

dsn -

propertyName -

Returns:

the UID of the specified property and datasource; used in JSP EL Functions

currentEntity

public static TCEntity currentEntity(com.taggercat.el.ELContext elContext,
                                     java.lang.String dsn)
                              throws com.taggercat.el.ParseException

Returns the current TCEntity ( the one after the current TCEntity ) in the named ds.

Throws:

com.taggercat.el.ParseException

Parameters:

elContext - the EL context

dsn - the data source name

Returns:

the current TCEntity in the named ds

nextEntity

public static TCEntity nextEntity(com.taggercat.el.ELContext elContext,
                                  java.lang.String dsn)
                           throws com.taggercat.el.ParseException

Returns the next TCEntity ( the one after the current TCEntity ) in the named ds.

Throws:

com.taggercat.el.ParseException

Parameters:

elContext - the EL context

dsn - the data source name

Returns:

the next TCEntity ( the one after the current TCEntity ) in the named ds

autoFilterValue

public static java.lang.String autoFilterValue(com.taggercat.el.ELContext elContext,
                                               java.lang.String dsn,
                                               java.lang.String propertyName)
                                        throws com.taggercat.el.ParseException

Returns the current auto-filter on the specified DSN and property Name.

Throws:

com.taggercat.el.ParseException

Parameters:

elContext - the EL context

dsn - the ds name

propertyName - the property name

Returns:

the current auto-filter on the specified DSN and property Name

getSQLValue

public static java.lang.Object getSQLValue(com.taggercat.el.ELContext elContext,
                                           java.lang.String sql)
                                    throws com.taggercat.el.ParseException

Executes an arbitrary SQL statement and returns the value from the first column of the first result row. This is typically used to get counts etc.

Security Alert: This EL method opens up a big security hole in your application. You can close this my re-registering the same function name in you context initialization process.

Throws:

com.taggercat.el.ParseException

Parameters:

elContext - the EL context

sql - the SQL statement

Returns:

the value of the first TCEntity and column

getUniqueResult

public static TCEntity getUniqueResult(com.taggercat.el.ELContext elContext,
                                       java.lang.String hql)
                                throws com.taggercat.el.ParseException

Executes an arbitrary HQL statement and returns the unique entity instance. This is typically used to get a unique instance to assign in a default value rule.

Security Alert: This EL method opens up a big security hole in your application. You can close this my re-registering the same function name in you context initialization process.

Throws:

com.taggercat.el.ParseException

Parameters:

elContext - the EL context

hql - the HQL statement

Returns:

the TCEntity

hasPermission

public static java.lang.Boolean hasPermission(com.taggercat.el.ELContext elContext,
                                              java.lang.String dataAction,
                                              java.lang.String entityName)
                                       throws com.taggercat.el.ParseException

Returns true of the current user has the specified action permission on the named entity.

Throws:

com.taggercat.el.ParseException

Parameters:

elContext - the EL context

dataAction - action names are one of READ, INSERT, UPDATE, or DELETE

entityName -

Returns:

true of the current user has the specified action permission on the named entity

hasPermission

public static java.lang.Boolean hasPermission(com.taggercat.el.ELContext elContext,
                                              java.lang.String dataAction,
                                              java.lang.String entityName,
                                              java.lang.String propertyName)
                                       throws com.taggercat.el.ParseException

Returns true of the current user has the specified action permission on the named entity.

Throws:

com.taggercat.el.ParseException

Parameters:

elContext - the EL context

dataAction - action names are one of READ, INSERT, UPDATE, or DELETE

entityName -

propertyName -

Returns:

rue of the current user has the specified action permission on the named entity.

hasUnsavedChanges

public static java.lang.Boolean hasUnsavedChanges(com.taggercat.el.ELContext elContext,
                                                  java.lang.String dsn)
                                           throws com.taggercat.el.ParseException

Returns true if there are unsaved changes on the specified data source.

Throws:

com.taggercat.el.ParseException

Parameters:

elContext - the EL context

dsn -

Returns:

true if there are unsaved changes on the specified data source

isUserInRole

public static java.lang.Boolean isUserInRole(com.taggercat.el.ELContext elContext,
                                             java.lang.String roleNames)

Returns true if the user is a member of the specified role ( group ) name.

Parameters:

elContext - the EL context

roleNames - a comma separated list of role ( group ) names.

Returns:

true if the user is a member of the specified role ( group ) name

isGroupMember

public static java.lang.Boolean isGroupMember(com.taggercat.el.ELContext elContext,
                                              java.lang.String groupNames)

Returns true if the current user is a member of one of the group names. This function is synonymous with the isUserInRole() function.

Parameters:

elContext -

groupNames - a comma separated list of group names

Returns:

true if the current user is a member of one of the group names

updateProperty

public static void updateProperty(com.taggercat.el.ELContext elContext,
                                  java.lang.String dsn,
                                  java.lang.String propertyName,
                                  java.lang.Object newValue)
                           throws com.taggercat.el.ParseException

Sets a property on the current entity in the data source

Throws:

com.taggercat.el.ParseException

Parameters:

elContext -

dsn - the data source name

propertyName - the property name

newValue - the value to set ( not an expression )

userName

public static java.lang.String userName(com.taggercat.el.ELContext elContext)

Returns the current user name.

Parameters:

elContext - the EL context

Returns:

the current user name

userId

public static long userId(com.taggercat.el.ELContext elContext)

Returns the current user id.

Parameters:

elContext - the EL context

Returns:

the current user id

encryptPassword

public static java.lang.String encryptPassword(java.lang.String password)

Returns the encrypted version of the specified password value.

Parameters:

password - the password to encrypt

Returns:

the encrypted password

list

public static java.util.List<java.lang.Object> list(com.taggercat.el.ELContext elContext,
                                                    java.lang.String dsn,
                                                    java.lang.String propertyName,
                                                    java.lang.String predicate)
                                             throws com.taggercat.el.ParseException

Gets a list of properties values from the named DS and property name that match the expression.

Throws:

com.taggercat.el.ParseException

Parameters:

elContext -

dsn - the data source name

propertyName - the property name

predicate - the expression to evaluate on each TCEntity

Returns:

the list of properties

findFirst

public static TCEntity findFirst(com.taggercat.el.ELContext elContext,
                                 java.lang.String dsn,
                                 java.lang.String predicate)
                          throws com.taggercat.el.ParseException

Finds the first entity in the data source that match the predicate expression.

Throws:

com.taggercat.el.ParseException

Parameters:

elContext -

dsn - the data source name

predicate - the expression to evaluate on each TCEntity

Returns:

the count value of the specified property

count

public static java.lang.Integer count(com.taggercat.el.ELContext elContext,
                                      java.lang.String dsn,
                                      java.lang.String predicate)
                               throws com.taggercat.el.ParseException

Gets a count of records in the data source that match the predicate expression.

Throws:

com.taggercat.el.ParseException

Parameters:

elContext -

dsn - the data source name

predicate - the expression to evaluate on each TCEntity

Returns:

the count value of the specified property

rowCount

public static java.lang.Integer rowCount(com.taggercat.el.ELContext elContext,
                                         java.lang.String dsn)
                                  throws com.taggercat.el.ParseException

Returns the number of rows in the data source.

Throws:

com.taggercat.el.ParseException

Parameters:

elContext -

dsn - the data source name

Returns:

the number of rows

extendedProperty

public static java.lang.String extendedProperty(com.taggercat.el.ELContext elContext,
                                                java.lang.String entityName,
                                                java.lang.String extendedPropertyName)
                                         throws com.taggercat.el.ParseException

Returns the extended property on the named entityName.

Throws:

com.taggercat.el.ParseException

Parameters:

elContext -

entityName - the entity name

extendedPropertyName - the property name

Returns:

the extended property value, or null if not set

extendedProperty

public static java.lang.String extendedProperty(com.taggercat.el.ELContext elContext,
                                                java.lang.String entityName,
                                                java.lang.String propertyName,
                                                java.lang.String extendedPropertyName)
                                         throws com.taggercat.el.ParseException

Returns the extended property on the named entityName and propertyName.

Throws:

com.taggercat.el.ParseException

Parameters:

elContext -

entityName - the entity name

propertyName - the property name

extendedPropertyName - the property name

Returns:

the extended property value, or null if not set

avg

public static java.lang.Double avg(com.taggercat.el.ELContext elContext,
                                   java.lang.String dsnPropertyName)
                            throws com.taggercat.el.ParseException

Throws:

com.taggercat.el.ParseException

avg

public static java.lang.Double avg(com.taggercat.el.ELContext elContext,
                                   java.lang.String dsn,
                                   java.lang.String propertyName)
                            throws com.taggercat.el.ParseException

Gets the average of properties from the named DS and property

Throws:

com.taggercat.el.ParseException

Parameters:

elContext -

dsn - the data source name

propertyName - the property name

Returns:

the list of properties

avg

public static java.lang.Double avg(com.taggercat.el.ELContext elContext,
                                   java.lang.String dsn,
                                   java.lang.String propertyName,
                                   java.lang.String predicate)
                            throws com.taggercat.el.ParseException

Gets the average of properties from the named DS and property name that match the predicate expression. Null values do not contribute to the average values.

Throws:

com.taggercat.el.ParseException

Parameters:

elContext -

dsn - the data source name

propertyName - the property name

predicate - the expression to evaluate on each TCEntity

Returns:

the average value of the specified property

max

public static java.lang.Double max(com.taggercat.el.ELContext elContext,
                                   java.lang.String dsnPropertyName)
                            throws com.taggercat.el.ParseException

Throws:

com.taggercat.el.ParseException

max

public static java.lang.Double max(com.taggercat.el.ELContext elContext,
                                   java.lang.String dsn,
                                   java.lang.String propertyName)
                            throws com.taggercat.el.ParseException

Gets the max of properties from the named DS and property

Throws:

com.taggercat.el.ParseException

Parameters:

elContext -

dsn - the data source name

propertyName - the property name

Returns:

the list of properties

max

public static java.lang.Double max(com.taggercat.el.ELContext elContext,
                                   java.lang.String dsn,
                                   java.lang.String propertyName,
                                   java.lang.String predicate)
                            throws com.taggercat.el.ParseException

Gets the max of property values from the named DS and property name that match the predicate expression.

Throws:

com.taggercat.el.ParseException

Parameters:

elContext -

dsn - the data source name

propertyName - the property name

predicate - the expression to evaluate on each TCEntity

Returns:

the maximum value of the specified property

min

public static java.lang.Double min(com.taggercat.el.ELContext elContext,
                                   java.lang.String dsnPropertyName)
                            throws com.taggercat.el.ParseException

Throws:

com.taggercat.el.ParseException

min

public static java.lang.Double min(com.taggercat.el.ELContext elContext,
                                   java.lang.String dsn,
                                   java.lang.String propertyName)
                            throws com.taggercat.el.ParseException

Gets the minimum of properties from the named DS and property

Throws:

com.taggercat.el.ParseException

Parameters:

elContext -

dsn - the data source name

propertyName - the property name

Returns:

the list of properties

min

public static java.lang.Double min(com.taggercat.el.ELContext elContext,
                                   java.lang.String dsn,
                                   java.lang.String propertyName,
                                   java.lang.String predicate)
                            throws com.taggercat.el.ParseException

Gets the min of property values from the named DS and property name that match the predicate expression.

Throws:

com.taggercat.el.ParseException

Parameters:

elContext -

dsn - the data source name

propertyName - the property name

predicate - the expression to evaluate on each TCEntity

Returns:

the minimum value of the specified property

sum

public static java.lang.Double sum(com.taggercat.el.ELContext elContext,
                                   java.lang.String dsnPropertyName)
                            throws com.taggercat.el.ParseException

Throws:

com.taggercat.el.ParseException

sum

public static java.lang.Double sum(com.taggercat.el.ELContext elContext,
                                   java.lang.String dsn,
                                   java.lang.String propertyName,
                                   java.lang.String predicate)
                            throws com.taggercat.el.ParseException

Gets the sum of properties from the named DS and property name that match the predicate expression.

Throws:

com.taggercat.el.ParseException

Parameters:

elContext -

dsn - the data source name

propertyName - the property name

predicate - the expression to evaluate on each TCEntity

Returns:

the list of properties

sum

public static java.lang.Double sum(com.taggercat.el.ELContext elContext,
                                   java.lang.String dsn,
                                   java.lang.String propertyName)
                            throws com.taggercat.el.ParseException

Gets the sum of properties from the named DS and property

Throws:

com.taggercat.el.ParseException

Parameters:

elContext -

dsn - the data source name

propertyName - the property name

Returns:

the list of properties

validExpression

public static java.lang.Boolean validExpression(com.taggercat.el.ELContext elContext,
                                                java.lang.String expression)
                                         throws com.taggercat.el.ParseException

This function is used to validate the syntax of the expression string.

Throws:

com.taggercat.el.ParseException

Parameters:

elContext -

expression -

Returns:

true if the expression is syntactically correct.

ageAsString

public static java.lang.String ageAsString(java.util.Date fromDate)

Returns a string representation of the delta time. This function is currently used in reporting the age of ATOM feeds. For example: 3 weeks,6 days ago and 4 days,10 hours ago, and 1 hour,20 minutes ago But, the small stuff is progressively dropped.

Parameters:

fromDate -

Returns:

the age of the date in a string format

roundDouble

public static final double roundDouble(double d,
                                       int places)

getUserSetting

public static java.lang.Object getUserSetting(java.lang.String name)

getUserSetting

public static java.lang.Object getUserSetting(java.lang.String name,
                                              java.lang.Object defaultValue)

getELContext

public static com.taggercat.el.ELContext getELContext()
                                               throws com.taggercat.el.ParseException

Throws:

com.taggercat.el.ParseException

tenantName

public static java.lang.String tenantName()

getTenantMetaData

public static com.taggercat.metadata.MetaDataReader getTenantMetaData()

getTenantObject

public static java.lang.Object getTenantObject(java.lang.String key)

max

public static java.lang.Double max(java.lang.Number a,
                                   java.lang.Number b)

The max of the two Number values. This is duplicated here due to a restriction in the El that all functions of the same name must be declared in one class file.

Parameters:

a - one of the numbers

b - the other number

Returns:

the max of the two values

min

public static java.lang.Double min(java.lang.Number a,
                                   java.lang.Number b)

The min of the two Number values.

Parameters:

a - one of the numbers

b - the other number

Returns:

the min of the two values