Class MultiVariableExpander
- java.lang.Object
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- org.apache.commons.digester.substitution.MultiVariableExpander
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- All Implemented Interfaces:
VariableExpander
public class MultiVariableExpander extends Object implements VariableExpander
Expands variable references from multiple sources.
- Since:
- 1.6
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Constructor Summary
Constructors Constructor Description MultiVariableExpander()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
addSource(String marker, Map<String,Object> source)
String
expand(String param)
Return the input string with any variables replaced by their corresponding value.String
expand(String str, String marker, Map<String,Object> source)
Replace any occurrences within the string of the form "marker{key}" with the value from source[key].
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Method Detail
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expand
public String expand(String param)
Description copied from interface:VariableExpander
Return the input string with any variables replaced by their corresponding value. If there are no variables in the string, then the input parameter is returned unaltered.- Specified by:
expand
in interfaceVariableExpander
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expand
public String expand(String str, String marker, Map<String,Object> source)
Replace any occurrences within the string of the form "marker{key}" with the value from source[key].Commonly, the variable marker is "$", in which case variables are indicated by ${key} in the string.
Returns the string after performing all substitutions.
If no substitutions were made, the input string object is returned (not a copy).
- Throws:
IllegalArgumentException
- if the input param references a variable which is not known to the specified source.
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