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## org.apache.ode.utils
Class HierarchicalProperties

    java.lang.Object
      org.apache.ode.utils.HierarchicalProperties

    public class HierarchicalProperties

extends java.lang.Object

This class load a list of regular property files (order matters). The main feature is that property can be chained in three levels. Then when querying for a property, if it's not found in the deepest level, the parent will be queryed and so on.

A prefix must be defined to discriminate the property name and the level-1, level-2 names. The default prefix is `ODE_PREFFIX`.

Properties must respect the following pattern: [level1.[level2.]prefix.]property

A concrete use case could be the definition of properties for wsdl services and ports.
Level 0 would be: values common to all services and ports.
Level 1: values common to a given service.
Level 2: values common to a given port.

For instance, if the property file looks like this:

    alias.foo_ns=http://foo.com

     timeout=40000
     a_namespace_with_no_alias_defined.film-service.port-of-cannes.ode.timeout=50000

     max-redirects=30
     foo_ns.brel-service.ode.max-redirects=40
     foo_ns.brel-service.port-of-amsterdam.ode.max-redirects=60

The following values may be expected:

     getProperty("max-redirects")                                                         => 30
     getProperty("http://foo.com", "brel-service", "max-redirects")                       => 40
     getProperty("http://foo.com", "brel-service", "port-of-amsterdam", "max-redirects")  => 60

     getProperty("a_namespace_with_no_alias_defined", "film-service", "timeout")                       => 40000
     getProperty("a_namespace_with_no_alias_defined", "film-service", "port-of-cannes", "timeout")     => 50000
     getProperty("http://foo.com", "port-of-amsterdam", "timeout")                                     => 40000

Values may contain some environment variables. For instance, message=You're using ${java.version}.

If a property name ends with ".file" or ".path", the assumption is made that the associated value is a path and as such is resolved against the path of the file it was loaded from.

Assigned properties must not start with 'system.' or 'env.'. These prefix are reserved to access system properties and environment variables.

Field Summary
`static java.lang.String` | `ODE_PREFFIX`

Constructor Summary
`HierarchicalProperties(java.io.File file)`
`HierarchicalProperties(java.io.File[] files)`
`HierarchicalProperties(java.io.File[] files, java.lang.String prefix)`
`HierarchicalProperties(java.io.File file, java.lang.String prefix)`
`HierarchicalProperties(java.util.List<java.io.File> propFiles)`

Method Summary
`void` | `clear()` Clear all content.
`java.lang.String` | `getPrefix()`
`java.util.Map` | `getProperties(javax.xml.namespace.QName service)`
`java.util.Map` | `getProperties(javax.xml.namespace.QName service, java.lang.String port)` Return a map containing all the properties for the given port.
`java.util.Map` | `getProperties(java.lang.String serviceNamespaceURI, java.lang.String serviceLocalPart)`
`java.util.Map` | `getProperties(java.lang.String serviceNamespaceURI, java.lang.String serviceLocalPart, java.lang.String port)`
`java.lang.String` | `getProperty(javax.xml.namespace.QName service, java.lang.String property)`
`java.lang.String` | `getProperty(javax.xml.namespace.QName service, java.lang.String port, java.lang.String property)`
`java.lang.String` | `getProperty(java.lang.String property)`
`java.lang.String` | `getProperty(java.lang.String serviceNamespaceURI, java.lang.String serviceLocalPart, java.lang.String property)`
`java.lang.String` | `getProperty(java.lang.String serviceNamespaceURI, java.lang.String serviceLocalPart, java.lang.String port, java.lang.String property)`
`protected org.apache.ode.utils.HierarchicalProperties.ChainedMap` | `getRootMap()`
`void` | `loadFiles()` Clear all existing content, then read the file and parse each property.

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

Field Detail

### ODE_PREFFIX

    public static final java.lang.String ODE_PREFFIX

See Also:
  Constant Field Values

Constructor Detail

### HierarchicalProperties

    public HierarchicalProperties(java.io.File[] files,
                                  java.lang.String prefix)
                           throws java.io.IOException

Parameters:
  `files` - the property file to be loaded. The file may not exist. But if the file exists it has to be a file (not a directory), otherwhise an IOException is thrown. Files will be loaded in the given order.
  `prefix` - the property prefix
Throws:
  `java.io.IOException`

### HierarchicalProperties

    public HierarchicalProperties(java.io.File[] files)
                           throws java.io.IOException

Throws:
  `java.io.IOException`

### HierarchicalProperties

    public HierarchicalProperties(java.io.File file,
                                  java.lang.String prefix)
                           throws java.io.IOException

Throws:
  `java.io.IOException`

### HierarchicalProperties

    public HierarchicalProperties(java.io.File file)
                           throws java.io.IOException

Throws:
  `java.io.IOException`

### HierarchicalProperties

    public HierarchicalProperties(java.util.List<java.io.File> propFiles)
                           throws java.io.IOException

Throws:
  `java.io.IOException`

Method Detail

### loadFiles

    public void loadFiles()
                   throws java.io.IOException

  Clear all existing content, then read the file and parse each property. Simply logs a message and returns if the file does not exist.

  Throws:
    `java.io.IOException` - if the file is a Directory

### clear

    public void clear()

  Clear all content. If `loadFiles()` is not invoked later, all returned values will be null.

### getRootMap

    protected org.apache.ode.utils.HierarchicalProperties.ChainedMap getRootMap()

### getProperties

    public java.util.Map getProperties(java.lang.String serviceNamespaceURI,
                                       java.lang.String serviceLocalPart)

### getProperties

    public java.util.Map getProperties(javax.xml.namespace.QName service)

  Parameters:
    `service` -
  Returns:
    a map containing all the properties for the given service.
  See Also:
    `getProperties(String, String)`

### getProperties

    public java.util.Map getProperties(java.lang.String serviceNamespaceURI,
                                       java.lang.String serviceLocalPart,
                                       java.lang.String port)

### getProperties

    public java.util.Map getProperties(javax.xml.namespace.QName service,
                                       java.lang.String port)

  Return a map containing all the properties for the given port. The map is an immutable snapshot of the properties. Meaning that futur changes to the properties will NOT be reflected in the returned map.

  Parameters:
    `service` -
    `port` -
  Returns:
    a map containing all the properties for the given port

### getProperty

    public java.lang.String getProperty(java.lang.String property)

### getProperty

    public java.lang.String getProperty(java.lang.String serviceNamespaceURI,
                                        java.lang.String serviceLocalPart,
                                        java.lang.String property)

### getProperty

    public java.lang.String getProperty(javax.xml.namespace.QName service,
                                        java.lang.String property)

### getProperty

    public java.lang.String getProperty(java.lang.String serviceNamespaceURI,
                                        java.lang.String serviceLocalPart,
                                        java.lang.String port,
                                        java.lang.String property)

### getProperty

    public java.lang.String getProperty(javax.xml.namespace.QName service,
                                        java.lang.String port,
                                        java.lang.String property)

### getPrefix

    public java.lang.String getPrefix()

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