org.springframework.core

Class Conventions

java.lang.Object

org.springframework.core.Conventions

public final class Conventions
extends Object

Provides methods to support various naming and other conventions used throughout the framework. Mainly for internal use within the framework.

Since:

2.0

Author:

Rob Harrop, Juergen Hoeller, Rossen Stoyanchev

Method Summary

Modifier and Type	Method and Description
static String	attributeNameToPropertyName(String attributeName) Convert Strings in attribute name format (e.g.
static String	getQualifiedAttributeName(Class<?> enclosingClass, String attributeName) Return an attribute name qualified by the given enclosing Class.
static String	getVariableName(Object value) Determine the conventional variable name for the supplied Object based on its concrete type.
static String	getVariableNameForParameter(MethodParameter parameter) Determine the conventional variable name for the given parameter taking the generic collection type, if any, into account.
static String	getVariableNameForReturnType(Method method) Determine the conventional variable name for the return type of the given method, taking the generic collection type, if any, into account.
static String	getVariableNameForReturnType(Method method, Class<?> resolvedType, Object value) Determine the conventional variable name for the return type of the given method, taking the generic collection type, if any, into account, falling back on the given return value if the method declaration is not specific enough, e.g.
static String	getVariableNameForReturnType(Method method, Object value) Determine the conventional variable name for the return type of the given method, taking the generic collection type, if any, into account, falling back on the given actual return value if the method declaration is not specific enough, e.g.

Methods inherited from class java.lang.Object

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

Method Detail

getVariableName

public static String getVariableName(Object value)

Determine the conventional variable name for the supplied Object based on its concrete type. The convention used is to return the un-capitalized short name of the Class, according to JavaBeans property naming rules.

For example:
com.myapp.Product becomes "product"
com.myapp.MyProduct becomes "myProduct"
com.myapp.UKProduct becomes "UKProduct"

For arrays the pluralized version of the array component type is used. For Collections an attempt is made to 'peek ahead' to determine the component type and return its pluralized version.

Parameters:

value - the value to generate a variable name for

Returns:

the generated variable name

getVariableNameForParameter

public static String getVariableNameForParameter(MethodParameter parameter)

Determine the conventional variable name for the given parameter taking the generic collection type, if any, into account.

As of 5.0 this method supports reactive types:
Mono<com.myapp.Product> becomes "productMono"
Flux<com.myapp.MyProduct> becomes "myProductFlux"
Observable<com.myapp.MyProduct> becomes "myProductObservable"

Parameters:

parameter - the method or constructor parameter

Returns:

the generated variable name

getVariableNameForReturnType

public static String getVariableNameForReturnType(Method method)

Determine the conventional variable name for the return type of the given method, taking the generic collection type, if any, into account.

Parameters:

method - the method to generate a variable name for

Returns:

the generated variable name

getVariableNameForReturnType

public static String getVariableNameForReturnType(Method method,
                                                  @Nullable
                                                  Object value)

Determine the conventional variable name for the return type of the given method, taking the generic collection type, if any, into account, falling back on the given actual return value if the method declaration is not specific enough, e.g. Object return type or untyped collection.

Parameters:

method - the method to generate a variable name for

value - the return value (may be null if not available)

Returns:

the generated variable name

getVariableNameForReturnType

public static String getVariableNameForReturnType(Method method,
                                                  Class<?> resolvedType,
                                                  @Nullable
                                                  Object value)

Determine the conventional variable name for the return type of the given method, taking the generic collection type, if any, into account, falling back on the given return value if the method declaration is not specific enough, e.g. Object return type or untyped collection.

As of 5.0 this method supports reactive types:
Mono<com.myapp.Product> becomes "productMono"
Flux<com.myapp.MyProduct> becomes "myProductFlux"
Observable<com.myapp.MyProduct> becomes "myProductObservable"

Parameters:

method - the method to generate a variable name for

resolvedType - the resolved return type of the method

value - the return value (may be null if not available)

Returns:

the generated variable name

attributeNameToPropertyName

public static String attributeNameToPropertyName(String attributeName)

Convert Strings in attribute name format (e.g. lowercase, hyphens separating words) into property name format (camel-case). For example transaction-manager becomes "transactionManager".

getQualifiedAttributeName

public static String getQualifiedAttributeName(Class<?> enclosingClass,
                                               String attributeName)

Return an attribute name qualified by the given enclosing Class. For example the attribute name 'foo' qualified by Class 'com.myapp.SomeClass' would be 'com.myapp.SomeClass.foo'