org.glassfish.jersey.internal.util
Class PropertiesHelper

java.lang.Object
  org.glassfish.jersey.internal.util.PropertiesHelper

public class PropertiesHelper
extends Object

Helper class containing convenience methods for reading org.glassfish.jersey.server.ResourceConfig and Configuration properties.

Author:

Martin Matula (martin.matula at oracle.com)

Constructor Summary

PropertiesHelper()

Method Summary

static <T> T	getValue(Map<String,?> properties, String key, Class<T> type) Returns value of a specified property.
static <T> T	getValue(Map<String,?> properties, String key, T defaultValue) Returns value of a specified property.
static <T> T	getValue(Map<String,?> properties, String key, T defaultValue, Class<T> type) Returns value of a specified property.

Methods inherited from class java.lang.Object

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

Constructor Detail

PropertiesHelper

public PropertiesHelper()

Method Detail

getValue

public static <T> T getValue(Map<String,?> properties,
                             String key,
                             T defaultValue)

Returns value of a specified property. If the property is not set or the real value type is not compatible with defaultValue type, the specified defaultValue is returned. Calling this method is equivalent to calling PropertyHelper.getValue(properties, key, defaultValue, (Class<T>) defaultValue.getClass())

Type Parameters:

T - Type of the property value.

Parameters:

properties - Map of properties to get the property value from.

key - Name of the property.

defaultValue - Default value to be returned if the specified property is not set or cannot be read.

Returns:

Value of the property or defaultValue.

getValue

public static <T> T getValue(Map<String,?> properties,
                             String key,
                             T defaultValue,
                             Class<T> type)

Returns value of a specified property. If the property is not set or the real value type is not compatible with the specified value type, returns defaultValue.

Type Parameters:

T - Type of the property value.

Parameters:

properties - Map of properties to get the property value from.

key - Name of the property.

defaultValue - Default value of the property.

type - Type to retrieve the value as.

Returns:

Value of the property or null.

getValue

public static <T> T getValue(Map<String,?> properties,
                             String key,
                             Class<T> type)

Returns value of a specified property. If the property is not set or the real value type is not compatible with the specified value type, returns null.

Type Parameters:

T - Type of the property value.

Parameters:

properties - Map of properties to get the property value from.

key - Name of the property.

type - Type to retrieve the value as.

Returns:

Value of the property or null.