org.glassfish.jersey.internal.util
Class PropertiesHelper

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

public final 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)

Method Summary

static <T> T	convertValue(Object value, Class<T> type) Convert Object value to a value of the specified class type.
static PrivilegedAction<Properties>	getSystemProperties() Get system properties.
static PrivilegedAction<String>	getSystemProperty(String name) Get system property.
static PrivilegedAction<String>	getSystemProperty(String name, String def) Get system property.
static <T> T	getValue(Map<String,?> properties, javax.ws.rs.RuntimeType runtimeType, String key, Class<T> type) Returns value of a specified property.
static <T> T	getValue(Map<String,?> properties, javax.ws.rs.RuntimeType runtimeType, String key, T defaultValue) Return value of a specified property.
static <T> T	getValue(Map<String,?> properties, javax.ws.rs.RuntimeType runtimeType, String key, T defaultValue, Class<T> type) Returns value of a specified property.
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) Return 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.
static boolean	isProperty(Map<String,Object> properties, String name) Get the value of the property with a given name converted to boolean.
static boolean	isProperty(Object value) Get the value of the property converted to boolean.

Methods inherited from class java.lang.Object

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

Method Detail

getSystemProperties

public static PrivilegedAction<Properties> getSystemProperties()

Get system properties. This method delegates to System.getProperties() while running it in a privileged code block.

Returns:

privileged action to obtain system properties.

getSystemProperty

public static PrivilegedAction<String> getSystemProperty(String name)

Get system property. This method delegates to System.getProperty(String) while running it in a privileged code block.

Parameters:

name - system property name.

Returns:

privileged action to obtain system property value that will return null if there's no such system property.

getSystemProperty

public static PrivilegedAction<String> getSystemProperty(String name,
                                                         String def)

Get system property. This method delegates to System.getProperty(String) while running it in a privileged code block.

Parameters:

name - system property name.

def - default property value.

Returns:

privileged action to obtain system property value that will return the default value if there's no such system property.

getValue

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

Return 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,
                             javax.ws.rs.RuntimeType runtimeType,
                             String key,
                             T defaultValue)

Return 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, runtimeType, 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.

runtimeType - Runtime type which is used to check whether there is a property with the same key but post-fixed by runtime type (.server or .client) which would override the key property.

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,
                             javax.ws.rs.RuntimeType runtimeType,
                             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.

runtimeType - Runtime type which is used to check whether there is a property with the same key but post-fixed by runtime type (.server or .client) which would override the key property.

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.

getValue

public static <T> T getValue(Map<String,?> properties,
                             javax.ws.rs.RuntimeType runtimeType,
                             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.

runtimeType - Runtime type which is used to check whether there is a property with the same key but post-fixed by runtime type (.server or .client) which would override the key property.

key - Name of the property.

type - Type to retrieve the value as.

Returns:

Value of the property or null.

convertValue

public static <T> T convertValue(Object value,
                                 Class<T> type)

Convert Object value to a value of the specified class type.

Type Parameters:

T - converted value type.

Parameters:

value - Object value to convert.

type - conversion type.

Returns:

value converted to the specified class type.

isProperty

public static boolean isProperty(Map<String,Object> properties,
                                 String name)

Get the value of the property with a given name converted to boolean. Returns false if the value is not convertible.

Parameters:

properties - key-value map of properties.

name - property name.

Returns:

boolean property value or false if the property is not convertible.

isProperty

public static boolean isProperty(Object value)

Get the value of the property converted to boolean. Returns false if the value is not convertible.

Parameters:

value - property value.

Returns:

boolean property value or false if the property is not convertible.