nl.nn.credentialprovider.util

Class StringResolver

java.lang.Object

nl.nn.credentialprovider.util.StringResolver

public class StringResolver
extends Object

Provide functionality to resolve ${property.key} to the value of the property key, recursively.

Author:

Johan Verrips

Field Summary

Fields

Modifier and Type	Field and Description
static String	DELIM_START
static String	DELIM_STOP

Constructor Summary

Constructors

Constructor and Description
StringResolver()

Method Summary

Modifier and Type	Method and Description
static String	getSystemProperty(String key, String def) Very similar to System.getProperty except that the SecurityException is hidden.
static boolean	needsResolution(String string)
static String	substVars(String val, Map props)
static String	substVars(String val, Map props1, Map props2) Do variable substitution on a string to resolve ${x2} to the value of the property x2.
static String	substVars(String val, Map props1, Map props2, String delimStart, String delimStop)

Methods inherited from class java.lang.Object

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

Field Detail

DELIM_START

public static final String DELIM_START

See Also:

Constant Field Values

DELIM_STOP

public static final String DELIM_STOP

See Also:

Constant Field Values

Constructor Detail

StringResolver

public StringResolver()

Method Detail

getSystemProperty

public static String getSystemProperty(String key,
                                       String def)

Very similar to System.getProperty except that the SecurityException is hidden.

Parameters:

key - The key to search for.

def - The default value to return.

Returns:

the string value of the system property, or the default value if there is no property with that key.

Since:

1.1

substVars

public static String substVars(String val,
                               Map props1,
                               Map props2)
                        throws IllegalArgumentException

Do variable substitution on a string to resolve ${x2} to the value of the property x2. This is done recursive, so that

 Properties prop = new Properties();
 prop.put("test.name", "this is a name with ${test.xx}");
 prop.put("test.xx", "again");
 System.out.println(prop.get("test.name"));
 

will print this is a name with again

First it looks in the System properties, if none is found and a Properties object is specified, it looks in the specified Properties object. If two Properties objects are specified, first it look in the first object. If none is found, it looks in the second object.

Throws:

IllegalArgumentException

substVars

public static String substVars(String val,
                               Map props1,
                               Map props2,
                               String delimStart,
                               String delimStop)
                        throws IllegalArgumentException

Throws:

IllegalArgumentException

substVars

public static String substVars(String val,
                               Map props)
                        throws IllegalArgumentException

Throws:

IllegalArgumentException

needsResolution

public static boolean needsResolution(String string)