Package org.apache.maven.internal.xml

Class DefaultXmlService

java.lang.Object

org.apache.maven.api.xml.XmlService

org.apache.maven.internal.xml.DefaultXmlService

public class DefaultXmlService
extends XmlService

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.maven.api.xml.XmlService

XmlService.InputLocationBuilder

Field Summary

Fields inherited from class org.apache.maven.api.xml.XmlService

CHILDREN_COMBINATION_APPEND, CHILDREN_COMBINATION_MERGE, CHILDREN_COMBINATION_MODE_ATTRIBUTE, DEFAULT_CHILDREN_COMBINATION_MODE, DEFAULT_SELF_COMBINATION_MODE, ID_COMBINATION_MODE_ATTRIBUTE, KEYS_COMBINATION_MODE_ATTRIBUTE, SELF_COMBINATION_MERGE, SELF_COMBINATION_MODE_ATTRIBUTE, SELF_COMBINATION_OVERRIDE, SELF_COMBINATION_REMOVE

Constructor Summary

Constructors

Constructor	Description
DefaultXmlService()

Method Summary

Modifier and Type	Method	Description
XmlNode	doMerge(XmlNode dominant, XmlNode recessive, Boolean childMergeOverride)	Merges one DOM into another, given a specific algorithm and possible override points for that algorithm.
XmlNode	doRead(InputStream input, XmlService.InputLocationBuilder locationBuilder)
XmlNode	doRead(Reader reader, XmlService.InputLocationBuilder locationBuilder)
XmlNode	doRead(XMLStreamReader parser, XmlService.InputLocationBuilder locationBuilder)
void	doWrite(XmlNode node, Writer writer)

Methods inherited from class org.apache.maven.api.xml.XmlService

merge, merge, newXMLInputFactory, read, read, read, read, read, write

Methods inherited from class java.lang.Object

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

Constructor Details

DefaultXmlService

public DefaultXmlService()

Method Details

doRead

@Nonnull
public XmlNode doRead(InputStream input,
 @Nullable
 XmlService.InputLocationBuilder locationBuilder)
               throws XMLStreamException

Specified by:

doRead in class XmlService

Throws:

XMLStreamException

doRead

@Nonnull
public XmlNode doRead(Reader reader,
 @Nullable
 XmlService.InputLocationBuilder locationBuilder)
               throws XMLStreamException

Specified by:

doRead in class XmlService

Throws:

XMLStreamException

doRead

@Nonnull
public XmlNode doRead(XMLStreamReader parser,
 @Nullable
 XmlService.InputLocationBuilder locationBuilder)
               throws XMLStreamException

Specified by:

doRead in class XmlService

Throws:

XMLStreamException

doWrite

public void doWrite(XmlNode node,
 Writer writer)
             throws IOException

Specified by:

doWrite in class XmlService

Throws:

IOException

doMerge

public XmlNode doMerge(XmlNode dominant,
 XmlNode recessive,
 Boolean childMergeOverride)

Merges one DOM into another, given a specific algorithm and possible override points for that algorithm.

The algorithm is as follows:

1. if the recessive DOM is null, there is nothing to do... return.
2. Determine whether the dominant node will suppress the recessive one (flag=mergeSelf).
   1. retrieve the 'combine.self' attribute on the dominant node, and try to match against 'override'... if it matches 'override', then set mergeSelf == false...the dominant node suppresses the recessive one completely.
   2. otherwise, use the default value for mergeSelf, which is true...this is the same as specifying 'combine.self' == 'merge' as an attribute of the dominant root node.
3. If mergeSelf == true
   1. Determine whether children from the recessive DOM will be merged or appended to the dominant DOM as siblings (flag=mergeChildren).
      1. if childMergeOverride is set (non-null), use that value (true/false)
      2. retrieve the 'combine.children' attribute on the dominant node, and try to match against 'append'...
      3. if it matches 'append', then set mergeChildren == false...the recessive children will be appended as siblings of the dominant children.
      4. otherwise, use the default value for mergeChildren, which is true...this is the same as specifying 'combine.children' == 'merge' as an attribute on the dominant root node.
   2. Iterate through the recessive children, and:
      1. if mergeChildren == true and there is a corresponding dominant child (matched by element name), merge the two.
      2. otherwise, add the recessive child as a new child on the dominant root node.

Specified by:

doMerge in class XmlService