Package net.sourceforge.pmd.properties

Class MethodProperty

java.lang.Object

net.sourceforge.pmd.properties.MethodProperty

All Implemented Interfaces:

java.lang.Comparable<java.lang.reflect.Method>, PackagedPropertyDescriptor<java.lang.reflect.Method>, PropertyDescriptor<java.lang.reflect.Method>, SingleValuePropertyDescriptor<java.lang.reflect.Method>

public final class MethodProperty
extends java.lang.Object

Defines a property type that can specify a single method to use as part of a rule.

Rule developers can limit the rules to those within designated packages per the 'legalPackages' argument in the constructor which can be an array of partial package names, i.e., ["java.lang", "com.mycompany" ].

Version:

Refactored June 2017 (6.0.0)

Author:

Brian Remedios

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	MethodProperty.MethodPBuilder

Field Summary

Fields

Modifier and Type	Field	Description
protected PackagedPropertyModule<T>	module

Fields inherited from interface net.sourceforge.pmd.properties.PackagedPropertyDescriptor

MULTI_VALUE_DELIMITER, PACKAGE_NAME_DELIMITER

Constructor Summary

Constructors

Constructor	Description
MethodProperty(java.lang.String theName, java.lang.String theDescription, java.lang.reflect.Method theDefault, java.lang.String[] legalPackageNames, float theUIOrder)	Constructor for MethodProperty.
MethodProperty(java.lang.String theName, java.lang.String theDescription, java.lang.String defaultMethodStr, java.lang.String[] legalPackageNames, float theUIOrder)	Deprecated. will be removed in 7.0.0

Method Summary

Modifier and Type	Method	Description
protected void	addAttributesTo(java.util.Map<PropertyDescriptorField,java.lang.String> attributes)	Adds this property's attributes to the map.
java.lang.String	asDelimitedString(T value)	Formats the object onto a string suitable for storage within the property map.
protected java.lang.String	asString(java.lang.reflect.Method value)	Returns a string representation of the value, even if it's null.
java.util.Map<PropertyDescriptorField,java.lang.String>	attributeValuesById()	Returns a map representing all the property attributes of the receiver in string form.
int	compareTo(PropertyDescriptor<?> otherProperty)
java.lang.reflect.Method	createFrom(java.lang.String valueString)	Parse a string and returns an instance of a value.
protected java.lang.String	defaultAsString()	Returns a string representation of the default value.
T	defaultValue()	Default value to use when the user hasn't specified one or when they wish to revert to a known-good state.
java.lang.String	description()	Describes the property and the role it plays within the rule it is specified for.
boolean	equals(java.lang.Object obj)
java.lang.String	errorFor(T value)	Validation function that returns a diagnostic error message for a sample property value.
int	hashCode()
boolean	isDefinedExternally()	True if this descriptor was defined in the ruleset xml.
boolean	isMultiValue()	Returns whether the property is multi-valued, i.e.
java.lang.String[]	legalPackageNames()	Returns the legal package names.
java.lang.String	name()	The name of the property without spaces as it serves as the key into the property map.
static MethodProperty.MethodPBuilder	named(java.lang.String name)
protected java.lang.String[]	packageNamesIn(java.util.Map<PropertyDescriptorField,java.lang.String> params)
int	preferredRowCount()	If the datatype is a String then return the preferred number of rows to allocate in the text widget, returns a value of one for all other types.
java.lang.String	propertyErrorFor(Rule rule)	A convenience method that returns an error string if the rule holds onto a property value that has a problem.
java.lang.String	toString()
java.lang.Class<java.lang.reflect.Method>	type()	Denotes the value datatype.
float	uiOrder()	Denotes the relative order the property field should occupy if we are using an auto-generated UI to display and edit property values.
protected java.lang.String	valueErrorFor(T value)	Checks the value for an error.
T	valueFrom(java.lang.String valueString)	Returns the value represented by this string.

Methods inherited from interface java.lang.Comparable

compareTo

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface net.sourceforge.pmd.properties.PropertyDescriptor

asDelimitedString, attributeValuesById, defaultValue, description, errorFor, isDefinedExternally, isMultiValue, name, preferredRowCount, propertyErrorFor, uiOrder, valueFrom

Field Detail

module

protected final PackagedPropertyModule<T> module

Constructor Detail

MethodProperty

public MethodProperty(java.lang.String theName,
                      java.lang.String theDescription,
                      java.lang.reflect.Method theDefault,
                      java.lang.String[] legalPackageNames,
                      float theUIOrder)

Constructor for MethodProperty.

Parameters:

theName - Name of the property

theDescription - Description

theDefault - Default value

legalPackageNames - Legal packages

theUIOrder - UI order

MethodProperty

public MethodProperty(java.lang.String theName,
                      java.lang.String theDescription,
                      java.lang.String defaultMethodStr,
                      java.lang.String[] legalPackageNames,
                      float theUIOrder)

Deprecated. will be removed in 7.0.0

Constructor for MethodProperty using a string as a default value.

Parameters:

theName - Name of the property

theDescription - Description

defaultMethodStr - Default value, that will be parsed into a Method object

legalPackageNames - Legal packages

theUIOrder - UI order

Method Detail

asString

protected java.lang.String asString(java.lang.reflect.Method value)

Returns a string representation of the value, even if it's null.

Parameters:

value - The value to describe

Returns:

A string representation of the value

type

public java.lang.Class<java.lang.reflect.Method> type()

Description copied from interface: PropertyDescriptor

Denotes the value datatype. For multi value properties, this is not the List class but the list's component class.

Returns:

Class literal of the value type

createFrom

public java.lang.reflect.Method createFrom(java.lang.String valueString)
                                    throws java.lang.IllegalArgumentException

Parse a string and returns an instance of a value.

Parameters:

valueString - String to parse

Returns:

An instance of a value

Throws:

java.lang.IllegalArgumentException

named

public static MethodProperty.MethodPBuilder named(java.lang.String name)

addAttributesTo

protected void addAttributesTo(java.util.Map<PropertyDescriptorField,java.lang.String> attributes)

Adds this property's attributes to the map. Subclasses can override this to add more PropertyDescriptorField.

Parameters:

attributes - The map to fill

valueErrorFor

protected java.lang.String valueErrorFor(T value)

Checks the value for an error.

Parameters:

value - Value to check

Returns:

A diagnostic error message, or null if there's no problem

legalPackageNames

public java.lang.String[] legalPackageNames()

Description copied from interface: PackagedPropertyDescriptor

Returns the legal package names.

Specified by:

legalPackageNames in interface PackagedPropertyDescriptor<T>

Returns:

The legal package names

packageNamesIn

protected java.lang.String[] packageNamesIn(java.util.Map<PropertyDescriptorField,java.lang.String> params)

defaultValue

public final T defaultValue()

Description copied from interface: PropertyDescriptor

Default value to use when the user hasn't specified one or when they wish to revert to a known-good state.

Specified by:

defaultValue in interface PropertyDescriptor<T>

Returns:

Object

isMultiValue

public final boolean isMultiValue()

Description copied from interface: PropertyDescriptor

Returns whether the property is multi-valued, i.e. an array of strings,

As unary property rule properties will return a value of one, you must use the get/setProperty accessors when working with the actual values. When working with multi-value properties then the get/setProperties accessors must be used.

Specified by:

isMultiValue in interface PropertyDescriptor<T>

Returns:

boolean

asDelimitedString

public java.lang.String asDelimitedString(T value)

Description copied from interface: PropertyDescriptor

Formats the object onto a string suitable for storage within the property map.

Specified by:

asDelimitedString in interface PropertyDescriptor<T>

Parameters:

value - Object

Returns:

String

propertyErrorFor

public java.lang.String propertyErrorFor(Rule rule)

Description copied from interface: PropertyDescriptor

A convenience method that returns an error string if the rule holds onto a property value that has a problem. Returns null otherwise.

Specified by:

propertyErrorFor in interface PropertyDescriptor<T>

Parameters:

rule - Rule

Returns:

String

errorFor

public java.lang.String errorFor(T value)

Description copied from interface: PropertyDescriptor

Validation function that returns a diagnostic error message for a sample property value. Returns null if the value is acceptable.

Specified by:

errorFor in interface PropertyDescriptor<T>

Parameters:

value - The value to check.

Returns:

A diagnostic message.

defaultAsString

protected final java.lang.String defaultAsString()

Returns a string representation of the default value.

Returns:

A string representation of the default value.

valueFrom

public final T valueFrom(java.lang.String valueString)
                  throws java.lang.IllegalArgumentException

Description copied from interface: PropertyDescriptor

Returns the value represented by this string.

Specified by:

valueFrom in interface PropertyDescriptor<T>

Parameters:

valueString - The string to parse

Returns:

The value represented by the string

Throws:

java.lang.IllegalArgumentException - if the given string cannot be parsed

description

public java.lang.String description()

Description copied from interface: PropertyDescriptor

Describes the property and the role it plays within the rule it is specified for. Could be used in a tooltip.

Specified by:

description in interface PropertyDescriptor<T>

Returns:

String

uiOrder

public float uiOrder()

Description copied from interface: PropertyDescriptor

Denotes the relative order the property field should occupy if we are using an auto-generated UI to display and edit property values. If the value returned has a non-zero fractional part then this is can be used to place adjacent fields on the same row.

Example:
name -> 0.0 description 1.0 minValue -> 2.0 maxValue -> 2.1

..would have their fields placed like:
name: [ ] description: [ ] minimum: [ ] maximum: [ ]

Specified by:

uiOrder in interface PropertyDescriptor<T>

Returns:

float

compareTo

public final int compareTo(PropertyDescriptor<?> otherProperty)

Specified by:

compareTo in interface java.lang.Comparable<T>

preferredRowCount

public int preferredRowCount()

Description copied from interface: PropertyDescriptor

If the datatype is a String then return the preferred number of rows to allocate in the text widget, returns a value of one for all other types. Useful for multi-line XPATH editors.

Specified by:

preferredRowCount in interface PropertyDescriptor<T>

Returns:

int

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

name

public java.lang.String name()

Description copied from interface: PropertyDescriptor

The name of the property without spaces as it serves as the key into the property map.

Specified by:

name in interface PropertyDescriptor<T>

Returns:

String

attributeValuesById

public final java.util.Map<PropertyDescriptorField,java.lang.String> attributeValuesById()

Description copied from interface: PropertyDescriptor

Returns a map representing all the property attributes of the receiver in string form.

Specified by:

attributeValuesById in interface PropertyDescriptor<T>

Returns:

map

isDefinedExternally

public boolean isDefinedExternally()

Description copied from interface: PropertyDescriptor

True if this descriptor was defined in the ruleset xml. This precision is necessary for the RuleSetWriter to write out the property correctly: if it was defined externally, then its definition must be written out, otherwise only its value.

Specified by:

isDefinedExternally in interface PropertyDescriptor<T>

Returns:

True if the descriptor was defined in xml