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## org.apache.cayenne.project
Class ProjectTraversal

    java.lang.Object
      org.apache.cayenne.project.ProjectTraversal

    public class ProjectTraversal

extends Object

ProjectTraversal allows to traverse Cayenne project tree in a "depth-first" order starting from an arbitrary level to its children.

Current implementation is not very efficient and would actually first read the whole tree, before returning the first element from the iterator.

Author:
  Andrus Adamchik

Field Summary
`protected static Comparator` | `dataDomainComparator`
`protected static Comparator` | `dataMapComparator`
`protected static Comparator` | `dataNodeComparator`
`protected ProjectTraversalHandler` | `handler`
`protected static Comparator` | `mapObjectComparator`
`protected static Comparator` | `queryComparator`
`protected boolean` | `sort`

Constructor Summary
`ProjectTraversal(ProjectTraversalHandler handler)`
`ProjectTraversal(ProjectTraversalHandler handler, boolean sort)` Creates ProjectTraversal instance with a given handler and sort policy.

Method Summary
`void` | `traverse(Object rootNode)` Performs traversal starting from the root node.
`void` | `traverse(Object rootNode, ProjectPath path)`
`void` | `traverseAttributes(Iterator attributes, ProjectPath path)`
`void` | `traverseDomains(Iterator domains, ProjectPath path)` Performs traversal starting from a list of domains.
`void` | `traverseEntities(Iterator entities, ProjectPath path)`
`void` | `traverseMaps(Iterator maps, ProjectPath path)`
`void` | `traverseNodes(Iterator nodes, ProjectPath path)`
`void` | `traverseProcedureParameters(Iterator parameters, ProjectPath path)`
`void` | `traverseProcedures(Iterator procedures, ProjectPath path)` Performs recusrive traversal of an Iterator of Cayenne Procedure objects.
`void` | `traverseProject(Project project, ProjectPath path)` Performs traversal starting from the Project and down to its children.
`void` | `traverseQueries(Iterator queries, ProjectPath path)` Performs recursive traversal of an Iterator of Cayenne Query objects.
`void` | `traverseRelationships(Iterator relationships, ProjectPath path)`

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

Field Detail

### mapObjectComparator

    protected static final Comparator mapObjectComparator

### dataMapComparator

    protected static final Comparator dataMapComparator

### dataDomainComparator

    protected static final Comparator dataDomainComparator

### dataNodeComparator

    protected static final Comparator dataNodeComparator

### queryComparator

    protected static final Comparator queryComparator

### handler

    protected ProjectTraversalHandler handler

### sort

    protected boolean sort

Constructor Detail

### ProjectTraversal

    public ProjectTraversal(ProjectTraversalHandler handler)

### ProjectTraversal

    public ProjectTraversal(ProjectTraversalHandler handler,
                            boolean sort)

  Creates ProjectTraversal instance with a given handler and sort policy. If `sort` is true, children of each node will be sorted using a predefined Comparator for a given type of child nodes.

Method Detail

### traverse

    public void traverse(Object rootNode)

  Performs traversal starting from the root node. Root node can be of any type supported in Cayenne projects (Configuration, DataMap, DataNode, etc...)

### traverse

    public void traverse(Object rootNode,
                         ProjectPath path)

### traverseProject

    public void traverseProject(Project project,
                                ProjectPath path)

  Performs traversal starting from the Project and down to its children.

### traverseDomains

    public void traverseDomains(Iterator domains,
                                ProjectPath path)

  Performs traversal starting from a list of domains.

### traverseNodes

    public void traverseNodes(Iterator nodes,
                              ProjectPath path)

### traverseMaps

    public void traverseMaps(Iterator maps,
                             ProjectPath path)

### traverseQueries

    public void traverseQueries(Iterator queries,
                                ProjectPath path)

  Performs recursive traversal of an Iterator of Cayenne Query objects.

### traverseProcedures

    public void traverseProcedures(Iterator procedures,
                                   ProjectPath path)

  Performs recusrive traversal of an Iterator of Cayenne Procedure objects.

### traverseEntities

    public void traverseEntities(Iterator entities,
                                 ProjectPath path)

### traverseAttributes

    public void traverseAttributes(Iterator attributes,
                                   ProjectPath path)

### traverseRelationships

    public void traverseRelationships(Iterator relationships,
                                      ProjectPath path)

### traverseProcedureParameters

    public void traverseProcedureParameters(Iterator parameters,
                                            ProjectPath path)

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