Package org.springframework.amqp.rabbit.config

Class NamespaceUtils

java.lang.Object

org.springframework.amqp.rabbit.config.NamespaceUtils

public abstract class NamespaceUtils
extends Object

Shared utility methods for namespace parsers.

Author:

Mark Pollack, Dave Syer, Gary Russell

Field Summary

Fields

Modifier and Type	Field	Description
static final String	BASE_PACKAGE
static final String	METHOD_ATTRIBUTE
static final String	ORDER
static final String	REF_ATTRIBUTE

Constructor Summary

Constructors

Constructor	Description
NamespaceUtils()

Method Summary

Modifier and Type	Method	Description
static void	addConstructorArgBooleanValueIfAttributeDefined(BeanDefinitionBuilder builder, Element element, String attributeName, boolean defaultValue)	Populates the bean definition constructor argument with the boolean value of that attribute if it is defined in the given element or else uses the default provided.
static boolean	addConstructorArgParentRefIfAttributeDefined(BeanDefinitionBuilder builder, Element element, String attributeName)	Populates the bean definition constructor argument with a reference to a bean with parent id equal to the attribute if it is defined in the given element.
static boolean	addConstructorArgRefIfAttributeDefined(BeanDefinitionBuilder builder, Element element, String attributeName)	Populates the bean definition constructor argument with a reference to a bean with id equal to the attribute if it is defined in the given element.
static boolean	addConstructorArgValueIfAttributeDefined(BeanDefinitionBuilder builder, Element element, String attributeName)	Populates the bean definition constructor argument with the value of that attribute if it is defined in the given element.
static String	createElementDescription(Element element)	Provides a user friendly description of an element based on its node name and, if available, its "id" attribute value.
static BeanDefinition	createExpressionDefIfAttributeDefined(String expressionElementName, Element element)
static BeanDefinition	createExpressionDefinitionFromValueOrExpression(String valueElementName, String expressionElementName, ParserContext parserContext, Element element, boolean oneRequired)
static boolean	isAttributeDefined(Element element, String attributeName)	Checks the attribute to see if it is defined in the given element.
static void	parseDeclarationControls(Element element, BeanDefinitionBuilder builder)	Parses 'auto-declare' and 'declared-by' attributes.
static boolean	setReferenceIfAttributeDefined(BeanDefinitionBuilder builder, Element element, String attributeName)	Populates the bean definition property corresponding to the specified attributeName with the reference to a bean identified by the value of that attribute if the attribute is defined in the given element.
static boolean	setReferenceIfAttributeDefined(BeanDefinitionBuilder builder, Element element, String attributeName, String propertyName)	Populates the specified bean definition property with the reference to a bean.
static boolean	setValueIfAttributeDefined(BeanDefinitionBuilder builder, Element element, String attributeName)	Populates the bean definition property corresponding to the specified attributeName with the value of that attribute if it is defined in the given element.
static boolean	setValueIfAttributeDefined(BeanDefinitionBuilder builder, Element element, String attributeName, String propertyName)	Populates the specified bean definition property with the value of the attribute whose name is provided if that attribute is defined in the given element.

Methods inherited from class java.lang.Object

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

Field Details

BASE_PACKAGE

public static final String BASE_PACKAGE

See Also:

• Constant Field Values

REF_ATTRIBUTE

public static final String REF_ATTRIBUTE

See Also:

• Constant Field Values

METHOD_ATTRIBUTE

public static final String METHOD_ATTRIBUTE

See Also:

• Constant Field Values

ORDER

public static final String ORDER

See Also:

• Constant Field Values

Constructor Details

NamespaceUtils

public NamespaceUtils()

Method Details

setValueIfAttributeDefined

public static boolean setValueIfAttributeDefined(BeanDefinitionBuilder builder,
 Element element,
 String attributeName,
 String propertyName)

Populates the specified bean definition property with the value of the attribute whose name is provided if that attribute is defined in the given element.

Parameters:

builder - the bean definition builder to be configured

element - the XML element where the attribute should be defined

attributeName - the name of the attribute whose value will be used to populate the property

propertyName - the name of the property to be populated

Returns:

true if defined.

setValueIfAttributeDefined

public static boolean setValueIfAttributeDefined(BeanDefinitionBuilder builder,
 Element element,
 String attributeName)

Populates the bean definition property corresponding to the specified attributeName with the value of that attribute if it is defined in the given element.

The property name will be the camel-case equivalent of the lower case hyphen separated attribute (e.g. the "foo-bar" attribute would match the "fooBar" property).

Parameters:

builder - the bean definition builder to be configured

element - the XML element where the attribute should be defined

attributeName - the name of the attribute whose value will be set on the property

Returns:

true if defined.

See Also:

• Conventions.attributeNameToPropertyName(String)

isAttributeDefined

public static boolean isAttributeDefined(Element element,
 String attributeName)

Checks the attribute to see if it is defined in the given element.

Parameters:

element - the XML element where the attribute should be defined

attributeName - the name of the attribute whose value will be used as a constructor argument

Returns:

true if defined.

addConstructorArgValueIfAttributeDefined

public static boolean addConstructorArgValueIfAttributeDefined(BeanDefinitionBuilder builder,
 Element element,
 String attributeName)

Populates the bean definition constructor argument with the value of that attribute if it is defined in the given element.

Parameters:

builder - the bean definition builder to be configured

element - the XML element where the attribute should be defined

attributeName - the name of the attribute whose value will be used as a constructor argument

Returns:

true if defined.

addConstructorArgBooleanValueIfAttributeDefined

public static void addConstructorArgBooleanValueIfAttributeDefined(BeanDefinitionBuilder builder,
 Element element,
 String attributeName,
 boolean defaultValue)

Populates the bean definition constructor argument with the boolean value of that attribute if it is defined in the given element or else uses the default provided.

Parameters:

builder - the bean definition builder to be configured

element - the XML element where the attribute should be defined

attributeName - the name of the attribute whose value will be used as a constructor argument

defaultValue - the default value to use if the attirbute is not set

addConstructorArgRefIfAttributeDefined

public static boolean addConstructorArgRefIfAttributeDefined(BeanDefinitionBuilder builder,
 Element element,
 String attributeName)

Populates the bean definition constructor argument with a reference to a bean with id equal to the attribute if it is defined in the given element.

Parameters:

builder - the bean definition builder to be configured

element - the XML element where the attribute should be defined

attributeName - the name of the attribute whose value will be used to set the reference

Returns:

true if defined.

addConstructorArgParentRefIfAttributeDefined

public static boolean addConstructorArgParentRefIfAttributeDefined(BeanDefinitionBuilder builder,
 Element element,
 String attributeName)

Populates the bean definition constructor argument with a reference to a bean with parent id equal to the attribute if it is defined in the given element.

Parameters:

builder - the bean definition builder to be configured

element - the XML element where the attribute should be defined

attributeName - the name of the attribute whose value will be used to set the reference

Returns:

true if defined.

setReferenceIfAttributeDefined

public static boolean setReferenceIfAttributeDefined(BeanDefinitionBuilder builder,
 Element element,
 String attributeName,
 String propertyName)

Populates the specified bean definition property with the reference to a bean. The bean reference is identified by the value from the attribute whose name is provided if that attribute is defined in the given element.

Parameters:

builder - the bean definition builder to be configured

element - the XML element where the attribute should be defined

attributeName - the name of the attribute whose value will be used as a bean reference to populate the property

propertyName - the name of the property to be populated

Returns:

true if the attribute is present and has text

setReferenceIfAttributeDefined

public static boolean setReferenceIfAttributeDefined(BeanDefinitionBuilder builder,
 Element element,
 String attributeName)

Populates the bean definition property corresponding to the specified attributeName with the reference to a bean identified by the value of that attribute if the attribute is defined in the given element.

The property name will be the camel-case equivalent of the lower case hyphen separated attribute (e.g. the "foo-bar" attribute would match the "fooBar" property).

Parameters:

builder - the bean definition builder to be configured

element - the XML element where the attribute should be defined

attributeName - the name of the attribute whose value will be used as a bean reference to populate the property

Returns:

true if defined.

See Also:

• Conventions.attributeNameToPropertyName(String)

createElementDescription

public static String createElementDescription(Element element)

Provides a user friendly description of an element based on its node name and, if available, its "id" attribute value. This is useful for creating error messages from within bean definition parsers.

Parameters:

element - The element.

Returns:

The description.

parseDeclarationControls

public static void parseDeclarationControls(Element element,
 BeanDefinitionBuilder builder)

Parses 'auto-declare' and 'declared-by' attributes.

Parameters:

element - The element.

builder - The builder.

createExpressionDefinitionFromValueOrExpression

public static BeanDefinition createExpressionDefinitionFromValueOrExpression(String valueElementName,
 String expressionElementName,
 ParserContext parserContext,
 Element element,
 boolean oneRequired)

createExpressionDefIfAttributeDefined

public static BeanDefinition createExpressionDefIfAttributeDefined(String expressionElementName,
 Element element)