Content

java.lang.Object
- org.jdom2.Content

所有已实现的接口:

java.io.Serializable, java.lang.Cloneable, NamespaceAware

直接已知子类:

Comment, DocType, Element, EntityRef, ProcessingInstruction, Text
```
public abstract class Content
extends java.lang.Object
implements java.io.Serializable, NamespaceAware
```
Superclass for JDOM objects which can be legal child content of Parent nodes.

作者:

Bradley S. Huffman, Jason Hunter, Rolf Lear

另请参阅:

Comment, DocType, Element, EntityRef, Parent, ProcessingInstruction, Text, 序列化表格

嵌套类概要

嵌套类
限定符和类型类和说明

static class Content.CType
An enumeration useful for identifying content types without having to do instanceof type conditionals.

嵌套类
限定符和类型	类和说明
`static class`	`Content.CType` An enumeration useful for identifying content types without having to do instanceof type conditionals.

方法概要

所有方法实例方法抽象方法具体方法
限定符和类型	方法和说明
`Content`	`clone()` Return a deep clone of this instance.
`Content`	`detach()` Detaches this child from its parent or does nothing if the child has no parent.
`boolean`	`equals(java.lang.Object ob)` This tests for equality of this Content object to the supplied object.
`Content.CType`	`getCType()` All content has an enumerated type expressing the type of content.
`Document`	`getDocument()` Return this child's owning document or null if the branch containing this child is currently not attached to a document.
`java.util.List<Namespace>`	`getNamespacesInherited()` Obtain a list of all namespaces that are in scope for this content, but were not introduced by this content.
`java.util.List<Namespace>`	`getNamespacesInScope()` Obtain a list of all namespaces that are in scope for the current content.
`java.util.List<Namespace>`	`getNamespacesIntroduced()` Obtain a list of all namespaces that are introduced to the XML tree by this node.
`Parent`	`getParent()` Return this child's parent, or null if this child is currently not attached.
`Element`	`getParentElement()` A convenience method that returns any parent element for this element, or null if the element is unattached or is a root element.
`abstract java.lang.String`	`getValue()` Returns the XPath 1.0 string value of this child.
`int`	`hashCode()` This returns the hash code for this `Content` item.

从类继承的方法 java.lang.Object
getClass, notify, notifyAll, toString, wait, wait, wait

- 方法详细资料
  - getCType
```
public final Content.CType getCType()
```
    All content has an enumerated type expressing the type of content. This makes it possible to use switch-type statements on the content.
    
    返回:
    
    A CType enumerated value representing this content.
  - detach
```
public Content detach()
```
    Detaches this child from its parent or does nothing if the child has no parent.
    This method can be overridden by particular Content subclasses to return a specific type of Content (co-variant return type). All overriding subclasses must call super.detach();
    
    返回:
    
    this child detached
  - getParent
```
public Parent getParent()
```
    Return this child's parent, or null if this child is currently not attached. The parent can be either an Element or a Document.
    This method can be overridden by particular Content subclasses to return a specific type of Parent (co-variant return type). All overriding subclasses must call super.getParent();
    
    返回:
    
    this child's parent or null if none
  - getParentElement
```
public final Element getParentElement()
```
    A convenience method that returns any parent element for this element, or null if the element is unattached or is a root element. This was the original behavior of getParent() in JDOM Beta 9 which began returning Parent in Beta 10. This method provides a convenient upgrade path for JDOM Beta 10 and 1.0 users.
    
    返回:
    
    the containing Element or null if unattached or a root element
  - getDocument
```
public Document getDocument()
```
    Return this child's owning document or null if the branch containing this child is currently not attached to a document.
    
    返回:
    
    this child's owning document or null if none
  - getValue
```
public abstract java.lang.String getValue()
```
    Returns the XPath 1.0 string value of this child.
    
    返回:
    
    xpath string value of this child.
  - clone
```
public Content clone()
```
    Return a deep clone of this instance. Even if this instance has a parent, the returned clone will not.
    All JDOM core classes are Cloneable, and never throw CloneNotSupportedException. Additionally all Cloneable JDOM classes return the correct type of instance from this method and there is no need to cast the result (co-variant return vaue).
    Subclasses of this should still call super.clone() in their clone method.
  - equals
```
public final boolean equals(java.lang.Object ob)
```
    This tests for equality of this Content object to the supplied object. Content items are considered equal only if they are referentially equal (i.e. the same object). User code may choose to compare objects based on their properties instead.
    
    覆盖:
    
    equals 在类中 java.lang.Object
    
    参数:
    
    ob - Object to compare to.
    
    返回:
    
    boolean - whether the Content is equal to the supplied Object.
  - hashCode
```
public final int hashCode()
```
    This returns the hash code for this Content item.
    
    覆盖:
    
    hashCode 在类中 java.lang.Object
    
    返回:
    
    int - hash code.
  - getNamespacesInScope
```
public java.util.List<Namespace> getNamespacesInScope()
```
    从接口复制的说明: NamespaceAware
    
    Obtain a list of all namespaces that are in scope for the current content.
    The contents of this list will always be the combination of getNamespacesIntroduced() and getNamespacesInherited().
    See NamespaceAware documentation for details on what the order of the Namespaces will be in the returned list.
    
    指定者:
    
    getNamespacesInScope 在接口中 NamespaceAware
    
    返回:
    
    a read-only list of Namespaces.
  - getNamespacesIntroduced
```
public java.util.List<Namespace> getNamespacesIntroduced()
```
    从接口复制的说明: NamespaceAware
    
    Obtain a list of all namespaces that are introduced to the XML tree by this node. Only Elements and Attributes can introduce namespaces, so all other Content types will return an empty list.
    The contents of this list will always be a subset (but in the same order) of getNamespacesInScope(), and will never intersect getNamspacesInherited()
    
    指定者:
    
    getNamespacesIntroduced 在接口中 NamespaceAware
    
    返回:
    
    a read-only list of Namespaces.
  - getNamespacesInherited
```
public java.util.List<Namespace> getNamespacesInherited()
```
    从接口复制的说明: NamespaceAware
    
    Obtain a list of all namespaces that are in scope for this content, but were not introduced by this content.
    The contents of this list will always be a subset (but in the same order) of getNamespacesInScope(), and will never intersect getNamspacesIntroduced()
    
    指定者:
    
    getNamespacesInherited 在接口中 NamespaceAware
    
    返回:
    
    a read-only list of Namespaces.

类 Content

嵌套类概要

方法概要

从类继承的方法 java.lang.Object

方法详细资料

getCType

detach

getParent

getParentElement

getDocument

getValue

clone

equals

hashCode

getNamespacesInScope

getNamespacesIntroduced

getNamespacesInherited