程序包 cn.taketoday.core.env

类 CompositePropertySource

java.lang.Object

cn.taketoday.core.env.PropertySource<T>

cn.taketoday.core.env.EnumerablePropertySource<Object>

cn.taketoday.core.env.CompositePropertySource

public class CompositePropertySource
extends EnumerablePropertySource<Object>

Composite PropertySource implementation that iterates over a set of PropertySource instances. Necessary in cases where multiple property sources share the same name, e.g. when multiple values are supplied to @PropertySource.

instead of plain PropertySource, exposing getPropertyNames() based on the accumulated property names from all contained sources (as far as possible).

从以下版本开始:

4.0

作者:

Chris Beams, Juergen Hoeller, Phillip Webb, Harry Yang

嵌套类概要

从类继承的嵌套类/接口 cn.taketoday.core.env.PropertySource

PropertySource.ComparisonPropertySource, PropertySource.StubPropertySource

字段概要

字段

修饰符和类型	字段	说明
private final LinkedHashSet<PropertySource<?>>	propertySources

从类继承的字段 cn.taketoday.core.env.PropertySource

name, source

构造器概要

构造器

构造器	说明
CompositePropertySource(String name)	Create a new CompositePropertySource.

方法概要

修饰符和类型	方法	说明
void	addFirstPropertySource(PropertySource<?> propertySource)	Add the given PropertySource to the start of the chain.
void	addPropertySource(PropertySource<?> propertySource)	Add the given PropertySource to the end of the chain.
boolean	containsProperty(String name)	Return whether this PropertySource contains a property with the given name.
Object	getProperty(String name)	Return the value associated with the given name, or null if not found.
String[]	getPropertyNames()	Return the names of all properties contained by the source object (never null).
LinkedHashSet<PropertySource<?>>	getPropertySources()	Return all property sources that this composite source holds.
String	toString()	Produce concise output (type and name) if the current log level does not include debug.

从类继承的方法 cn.taketoday.core.env.PropertySource

equals, getName, getSource, hashCode, named

从类继承的方法 java.lang.Object

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

字段详细资料

propertySources

private final LinkedHashSet<PropertySource<?>> propertySources

构造器详细资料

CompositePropertySource

public CompositePropertySource(String name)

Create a new CompositePropertySource.

参数:

name - the name of the property source

方法详细资料

getProperty

@Nullable
public Object getProperty(String name)

从类复制的说明: PropertySource

Return the value associated with the given name, or null if not found.

指定者:

getProperty 在类中 PropertySource<Object>

参数:

name - the property to find

另请参阅:

• PropertyResolver.getRequiredProperty(String)

containsProperty

public boolean containsProperty(String name)

从类复制的说明: EnumerablePropertySource

Return whether this PropertySource contains a property with the given name.

This implementation checks for the presence of the given name within the EnumerablePropertySource.getPropertyNames() array.

覆盖:

containsProperty 在类中 EnumerablePropertySource<Object>

参数:

name - the name of the property to find

getPropertyNames

public String[] getPropertyNames()

从类复制的说明: EnumerablePropertySource

Return the names of all properties contained by the source object (never null).

指定者:

getPropertyNames 在类中 EnumerablePropertySource<Object>

addPropertySource

public void addPropertySource(PropertySource<?> propertySource)

Add the given PropertySource to the end of the chain.

参数:

propertySource - the PropertySource to add

addFirstPropertySource

public void addFirstPropertySource(PropertySource<?> propertySource)

Add the given PropertySource to the start of the chain.

参数:

propertySource - the PropertySource to add

getPropertySources

public LinkedHashSet<PropertySource<?>> getPropertySources()

Return all property sources that this composite source holds.

toString

public String toString()

从类复制的说明: PropertySource

Produce concise output (type and name) if the current log level does not include debug. If debug is enabled, produce verbose output including the hash code of the PropertySource instance and every name/value property pair.

This variable verbosity is useful as a property source such as system properties or environment variables may contain an arbitrary number of property pairs, potentially leading too difficult to read exception and log messages.

覆盖:

toString 在类中 PropertySource<Object>

另请参阅:

• Logger.isDebugEnabled()