Package com.day.cq.wcm.foundation.forms

Class MergedValueMap

  • All Implemented Interfaces:
    java.util.Map<java.lang.String,​java.lang.Object>, ValueMap
    public class MergedValueMap
extends java.lang.Object
implements ValueMap
    MergedValueMap merges the values of the value maps from multiple resources. It merges the values of all value maps behind the resources, ie. provides a null value for a key if the value is not the same in all resources and only presents a value if that one is present in exactly all of the resources.

    It is optimized for the forms module, ie. on calls to get(String, Class) with String[] as type (see FormsHelper.getValues(org.apache.sling.api.SlingHttpServletRequest, Resource) ).

    Note: this class is not synchronized, ie. not thread-safe.

    • Nested Class Summary

      • Nested classes/interfaces inherited from interface java.util.Map

        java.util.Map.Entry<K extends java.lang.Object,​V extends java.lang.Object>

    • Field Summary

      • Fields inherited from interface org.apache.sling.api.resource.ValueMap

        EMPTY

    • Constructor Summary

      Constructors 
      Constructor Description
      MergedValueMap​(java.util.List<Resource> resources)  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void clear()  
      boolean containsKey​(java.lang.Object key)  
      boolean containsValue​(java.lang.Object value)  
      java.util.Set<java.util.Map.Entry<java.lang.String,​java.lang.Object>> entrySet()  
      java.lang.Object get​(java.lang.Object key)  
      <T> T get​(java.lang.String name, java.lang.Class<T> type)
      Get a named property and convert it into the given type.
      <T> T get​(java.lang.String name, T defaultValue)
      Get a named property and convert it into the given type.
      boolean isEmpty()  
      java.util.Set<java.lang.String> keySet()  
      java.lang.Object put​(java.lang.String key, java.lang.Object value)  
      void putAll​(java.util.Map<? extends java.lang.String,​? extends java.lang.Object> t)  
      java.lang.Object remove​(java.lang.Object key)  
      int size()  
      java.util.Collection<java.lang.Object> values()  

      • Methods inherited from class java.lang.Object

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

      • Methods inherited from interface java.util.Map

        compute, computeIfAbsent, computeIfPresent, equals, forEach, getOrDefault, hashCode, merge, putIfAbsent, remove, replace, replace, replaceAll

    • Constructor Detail

      • MergedValueMap

        public MergedValueMap​(java.util.List<Resource> resources)

    • Method Detail

      • get

        public java.lang.Object get​(java.lang.Object key)
        Specified by:
        get in interface java.util.Map<java.lang.String,​java.lang.Object>

      • get

        public <T> T get​(java.lang.String name,
                 java.lang.Class<T> type)
        Description copied from interface: ValueMap
        Get a named property and convert it into the given type. This method does not support conversion into a primitive type or an array of a primitive type. It should return null in this case.
        Specified by:
        get in interface ValueMap
        Type Parameters:
        T - The class of the type
        Parameters:
        name - The name of the property
        type - The class of the type
        Returns:
        Return named value converted to type T or null if non existing or can't be converted.

      • get

        public <T> T get​(java.lang.String name,
                 T defaultValue)
        Description copied from interface: ValueMap
        Get a named property and convert it into the given type. This method does not support conversion into a primitive type or an array of a primitive type. It should return the default value in this case.

        Implementation hint: In the past it was allowed to call this with a 2nd parameter being null. Therefore all implementations should internally call Map.get(Object) when the 2nd parameter has value null.
        Specified by:
        get in interface ValueMap
        Type Parameters:
        T - The expected type
        Parameters:
        name - The name of the property
        defaultValue - The default value to use if the named property does not exist or cannot be converted to the requested type. The default value is also used to define the type to convert the value to. Must not be null. If you want to return null by default rather rely on ValueMap.get(String, Class).
        Returns:
        Return named value converted to type T or the default value if non existing or can't be converted.

      • size

        public int size()
        Specified by:
        size in interface java.util.Map<java.lang.String,​java.lang.Object>

      • isEmpty

        public boolean isEmpty()
        Specified by:
        isEmpty in interface java.util.Map<java.lang.String,​java.lang.Object>

      • containsKey

        public boolean containsKey​(java.lang.Object key)
        Specified by:
        containsKey in interface java.util.Map<java.lang.String,​java.lang.Object>

      • containsValue

        public boolean containsValue​(java.lang.Object value)
        Specified by:
        containsValue in interface java.util.Map<java.lang.String,​java.lang.Object>

      • entrySet

        public java.util.Set<java.util.Map.Entry<java.lang.String,​java.lang.Object>> entrySet()
        Specified by:
        entrySet in interface java.util.Map<java.lang.String,​java.lang.Object>

      • keySet

        public java.util.Set<java.lang.String> keySet()
        Specified by:
        keySet in interface java.util.Map<java.lang.String,​java.lang.Object>

      • values

        public java.util.Collection<java.lang.Object> values()
        Specified by:
        values in interface java.util.Map<java.lang.String,​java.lang.Object>

      • clear

        public void clear()
        Specified by:
        clear in interface java.util.Map<java.lang.String,​java.lang.Object>

      • put

        public java.lang.Object put​(java.lang.String key,
                            java.lang.Object value)
        Specified by:
        put in interface java.util.Map<java.lang.String,​java.lang.Object>

      • putAll

        public void putAll​(java.util.Map<? extends java.lang.String,​? extends java.lang.Object> t)
        Specified by:
        putAll in interface java.util.Map<java.lang.String,​java.lang.Object>

      • remove

        public java.lang.Object remove​(java.lang.Object key)
        Specified by:
        remove in interface java.util.Map<java.lang.String,​java.lang.Object>