ExtensionMetadata (Crawler-commons 1.5 API)

java.lang.Object
- crawlercommons.sitemaps.extension.ExtensionMetadata

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

ImageAttributes, LinkAttributes, MobileAttributes, NewsAttributes, PageMap, PageMapDataObject, VideoAttributes
```
public abstract class ExtensionMetadata
extends Object
implements Serializable
```
Container for attributes of a SiteMapURL defined by a sitemap extension.

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor Description

ExtensionMetadata()

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`abstract Map<String,String[]>`	`asMap()`
`abstract boolean`	`equals(Object other)`
`boolean`	`isValid()`	Validate extension metadata.
`protected static boolean`	`urlEquals(URL a, URL b)`	Compare URLs by their string representation because calling `URL.equals(Object)` may trigger an unwanted and potentially slow DNS lookup to resolve the host part

Methods inherited from class java.lang.Object
clone, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ExtensionMetadata
```
public ExtensionMetadata()
```
- Method Detail
  - equals
```
public abstract boolean equals(Object other)
```
    Overrides:
    
    equals in class Object
  - asMap
```
public abstract Map<String,String[]> asMap()
```
  - isValid
```
public boolean isValid()
```
    Validate extension metadata. Extensions should override this method in order to validate the extension-specific set of metadata attributes.
    
    Returns:
    
    true if all required extension attributes are present and attributes are valid.
  - urlEquals
```
protected static boolean urlEquals(URL a,
                                   URL b)
```
    Compare URLs by their string representation because calling URL.equals(Object) may trigger an unwanted and potentially slow DNS lookup to resolve the host part