ObjectParamRule (Apache Tomcat 6.0.51 API Documentation)
Keywords: org.apache.tomcat.util.digester.ObjectParamRule class

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## org.apache.tomcat.util.digester
Class ObjectParamRule

    java.lang.Object
      org.apache.tomcat.util.digester.Rule
          org.apache.tomcat.util.digester.ObjectParamRule

    public class ObjectParamRule

extends Rule

Rule implementation that saves a parameter for use by a surrounding `CallMethodRule`.``

This parameter may be:

- an arbitrary Object defined programatically, assigned when the element pattern associated with the Rule is matched See `ObjectParamRule(int paramIndex, Object param)`
- an arbitrary Object defined programatically, assigned if the element pattern AND specified attribute name are matched See `ObjectParamRule(int paramIndex, String attributeName, Object param)`

Since:
  1.4

Field Summary
`protected java.lang.String` | `attributeName` The attribute which we are attempting to match
`protected java.lang.Object` | `param` The parameter we wish to pass to the method call
`protected int` | `paramIndex` The zero-relative index of the parameter we are saving.

Fields inherited from class org.apache.tomcat.util.digester.Rule
`digester, namespaceURI`

Constructor Summary
`ObjectParamRule(int paramIndex, java.lang.Object param)` Construct a "call parameter" rule that will save the given Object as the parameter value.
`ObjectParamRule(int paramIndex, java.lang.String attributeName, java.lang.Object param)` Construct a "call parameter" rule that will save the given Object as the parameter value, provided that the specified attribute exists.

Method Summary
`void` | `begin(java.lang.String namespace, java.lang.String name, org.xml.sax.Attributes attributes)` Process the start of this element.
`java.lang.String` | `toString()` Render a printable version of this Rule.

Methods inherited from class org.apache.tomcat.util.digester.Rule
`begin, body, body, end, end, finish, getDigester, getNamespaceURI, setDigester, setNamespaceURI`

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

Field Detail

### attributeName

    protected java.lang.String attributeName

  The attribute which we are attempting to match

### paramIndex

    protected int paramIndex

  The zero-relative index of the parameter we are saving.

### param

    protected java.lang.Object param

  The parameter we wish to pass to the method call

Constructor Detail

### ObjectParamRule

    public ObjectParamRule(int paramIndex,
                           java.lang.Object param)

  Construct a "call parameter" rule that will save the given Object as the parameter value.

  Parameters:
    `paramIndex` - The zero-relative parameter number
    `param` - the parameter to pass along

### ObjectParamRule

    public ObjectParamRule(int paramIndex,
                           java.lang.String attributeName,
                           java.lang.Object param)

  Construct a "call parameter" rule that will save the given Object as the parameter value, provided that the specified attribute exists.

  Parameters:
    `paramIndex` - The zero-relative parameter number
    `attributeName` - The name of the attribute to match
    `param` - the parameter to pass along

Method Detail

### begin

    public void begin(java.lang.String namespace,
                      java.lang.String name,
                      org.xml.sax.Attributes attributes)
               throws java.lang.Exception

  Process the start of this element.

  Overrides:
    `begin` in class `Rule`
  Parameters:
    `attributes` - The attribute list for this element
    `namespace` - the namespace URI of the matching element, or an empty string if the parser is not namespace aware or the element has no namespace
    `name` - the local name if the parser is namespace aware, or just the element name otherwise
  Throws:
    `java.lang.Exception`

### toString

    public java.lang.String toString()

  Render a printable version of this Rule.

  Overrides:
    `toString` in class `java.lang.Object`

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