Examples of org.apache.commons.configuration.interpol.ConfigurationInterpolator

Package org.apache.commons.configuration.interpol

Examples of org.apache.commons.configuration.interpol.ConfigurationInterpolator

org.apache.commons.configuration.interpol.ConfigurationInterpolator

ns.apache.org/lang">Commons Lang. By extending StrLookup it is able to provide values for variables that appear in expressions.

The basic idea of this class is that it can maintain a set of primitive StrLookup objects, each of which is identified by a special prefix. The variables to be processed have the form ${prefix:name}. ConfigurationInterpolator will extract the prefix and determine, which primitive lookup object is registered for it. Then the name of the variable is passed to this object to obtain the actual value. It is also possible to define a default lookup object, which will be used for variables that do not have a prefix or that cannot be resolved by their associated lookup object.

When a new instance of this class is created it is initialized with a default set of primitive lookup objects. This set can be customized using the static methods registerGlobalLookup() and deregisterGlobalLookup(). Per default it contains the following standard lookup objects:

Prefix	Lookup object
sys	With this prefix a lookup object is associated that is able to resolve system properties.
const	The `const` prefix indicates that a variable is to be interpreted as a constant member field of a class (i.e. a field with the static final modifiers). The name of the variable must be of the form `<full qualified class name>.<field name>`, e.g. `org.apache.commons.configuration.interpol.ConfigurationInterpolator.PREFIX_CONSTANTS` .

After an instance has been created the current set of lookup objects can be modified using the registerLookup() and deregisterLookup() methods. The default lookup object (that is invoked for variables without a prefix) can be set with the setDefaultLookup() method. (If a ConfigurationInterpolator instance is created by a configuration object, this lookup points to the configuration itself, so that variables are resolved using the configuration's properties. This ensures backward compatibility to earlier version of Commons Configuration.)

Implementation node: Instances of this class are not thread-safe related to modifications of their current set of registered lookup objects. It is intended that each instance is associated with a single Configuration object and used for its interpolation tasks.

@version $Id: ConfigurationInterpolator.java 561230 2007-07-31 04:17:09Z rahul $ @since 1.4 @author Commons Configuration team

     * @return the name of the configuration file to be loaded
     */
    protected String constructFileName(
            MultiFileBuilderParametersImpl multiParams)
    {
        ConfigurationInterpolator ci = getInterpolator();
        return String.valueOf(ci.interpolate(multiParams.getFilePattern()));
    }

View Full Code Here

         * @return The normalized URI reference.
         */
        @Override
        protected String normalizeURI(String uriref)
        {
            ConfigurationInterpolator ci = ((CatalogManager) catalogManager).getInterpolator();
            String resolved = (ci != null) ? String.valueOf(ci.interpolate(uriref)) : uriref;
            return super.normalizeURI(resolved);
        }

View Full Code Here

            lookups.put(key, lookup);
        }


        if (!lookups.isEmpty())
        {
            ConfigurationInterpolator defCI = defConfig.getInterpolator();
            if (defCI != null)
            {
                defCI.registerLookups(lookups);
            }
            resultConfig.getInterpolator().registerLookups(lookups);
        }
    }

View Full Code Here

            String basePath = xmlParams.getFileHandler().getBasePath();
            if (basePath != null)
            {
                BeanHelper.setProperty(resolver, "baseDir", basePath);
            }
            ConfigurationInterpolator ci = new ConfigurationInterpolator();
            ci.registerLookups(fetchPrefixLookups());
            BeanHelper.setProperty(resolver, "interpolator", ci);


            xmlParams.setEntityResolver(resolver);
        }
    }

View Full Code Here

     * @param defConfig the definition configuration
     */
    private void setUpParentInterpolator(Configuration resultConfig,
            Configuration defConfig)
    {
        parentInterpolator = new ConfigurationInterpolator();
        parentInterpolator.addDefaultLookup(new ConfigurationLookup(
                resultConfig));
        ConfigurationInterpolator defInterpolator = defConfig.getInterpolator();
        if (defInterpolator != null)
        {
            defInterpolator.setParentInterpolator(parentInterpolator);
        }
    }

View Full Code Here

     *
     * @return the {@code ConfigurationInterpolator}
     */
    private ConfigurationInterpolator initLocalInterpolator()
    {
        ConfigurationInterpolator ci = new ConfigurationInterpolator()
        {
            @Override
            protected Lookup fetchLookupForPrefix(String prefix)
            {
                return ConfigurationInterpolator

View Full Code Here

     * @param value the value that is to be interpolated
     * @return the interpolated value
     */
    protected Object interpolate(Object value)
    {
        ConfigurationInterpolator interpolator =
                getConfiguration().getInterpolator();
        return (interpolator != null) ? interpolator.interpolate(value) : value;
    }

View Full Code Here

    }


    @Override
    public <T> T to(Object src, Class<T> targetCls, ConfigurationInterpolator ci)
    {
        ConfigurationInterpolator interpolator = fetchInterpolator(ci);
        return convert(interpolator.interpolate(src), targetCls, interpolator);
    }

View Full Code Here

        if (isEmptyElement(src))
        {
            return Array.newInstance(elemClass, 0);
        }


        ConfigurationInterpolator interpolator = fetchInterpolator(ci);
        return elemClass.isPrimitive() ? toPrimitiveArray(src, elemClass,
                interpolator) : toObjectArray(src, elemClass, interpolator);
    }

View Full Code Here

                    "Target collection must not be null!");
        }


        if (src != null && !isEmptyElement(src))
        {
            ConfigurationInterpolator interpolator = fetchInterpolator(ci);
            convertToCollection(src, elemClass, interpolator, dest);
        }
    }

View Full Code Here

0 1 2 3

TOP

Related Classes of org.apache.commons.configuration.interpol.ConfigurationInterpolator

org.apache.commons.configuration.AbstractConfiguration

org.apache.commons.configuration.beanutils.XMLBeanDeclaration

org.apache.commons.configuration.builder.combined.CombinedConfigurationBuilder

org.apache.commons.configuration.builder.combined.MultiFileConfigurationBuilder

org.apache.commons.configuration.convert.DefaultConversionHandler

org.apache.commons.configuration.DefaultConfigurationBuilder$ConfigurationBeanFactory

org.apache.commons.configuration.DynamicCombinedConfiguration

org.apache.commons.configuration.InterpolationTestHelper

org.apache.commons.configuration.resolver.CatalogResolver$Catalog

org.apache.commons.configuration.SubnodeConfiguration

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.