LazyBindings (The Adobe AEM Quickstart and Web Application.)

java.lang.Object
- java.util.AbstractMap<K,V>
- - java.util.HashMap<java.lang.String,java.lang.Object>
  - - org.apache.sling.api.scripting.LazyBindings

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.util.Map<java.lang.String,java.lang.Object>, javax.script.Bindings

Direct Known Subclasses:

SlingBindings
```
@ConsumerType
public class LazyBindings
extends java.util.HashMap<java.lang.String,java.lang.Object>
implements javax.script.Bindings
```
The LazyBindings wraps another map and dynamically provides entries for the wrapped map through a map of LazyBindings.Suppliers.

When get(Object) is called with a key that's not present in the wrapped map, then the LazyBindings.Suppliers map will be queried and, if an entry exists for that key, the LazyBindings.Supplier-generated value will be used to populate the wrapped map.

While the keySet() and containsKey(Object) will also check the keys present in the LazyBindings.Suppliers map, all other methods (e.g. values(), HashMap.containsValue(Object)) will only deal with the contents of the wrapped map.
entrySet() will however return a merged view of both the LazyBindings.Suppliers and the wrapped map, so that copies to other LazyBindings maps preserve the functionality of having lazily-evaluated bindings.

This class does not provide any thread-safety guarantees. If this Bindings map needs to be used in a concurrent setup it's the responsibility of the caller to synchronize access. The simplest way would be to wrap it through Collections.synchronizedMap(Map).

See Also:

Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type	Class and Description
`static interface`	`LazyBindings.Supplier` This marker interface should be used for suppliers which should be unwrapped when used as values stored in a `LazyBindings` map.

Nested classes/interfaces inherited from class java.util.AbstractMap
java.util.AbstractMap.SimpleEntry<K,V>, java.util.AbstractMap.SimpleImmutableEntry<K,V>

Nested classes/interfaces inherited from interface java.util.Map
java.util.Map.Entry<K,V>

Constructor Summary

Constructors
Constructor and Description
`LazyBindings()`
`LazyBindings(java.util.Map<java.lang.String,LazyBindings.Supplier> suppliers)`
`LazyBindings(java.util.Map<java.lang.String,LazyBindings.Supplier> suppliers, java.util.Map<java.lang.String,java.lang.Object> wrapped)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`clear()`
`boolean`	`containsKey(java.lang.Object key)`
`@NotNull java.util.Set<java.util.Map.Entry<java.lang.String,java.lang.Object>>`	`entrySet()`
`boolean`	`equals(java.lang.Object o)`
`java.lang.Object`	`get(java.lang.Object key)`
`java.lang.Object`	`getOrDefault(java.lang.Object key, java.lang.Object defaultValue)`
`int`	`hashCode()`
`boolean`	`isEmpty()`
`@NotNull 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,?> toMerge)`
`java.lang.Object`	`remove(java.lang.Object key)`
`int`	`size()`
`@NotNull java.util.Collection<java.lang.Object>`	`values()`

Methods inherited from class java.util.HashMap
clone, compute, computeIfAbsent, computeIfPresent, containsValue, forEach, merge, putIfAbsent, remove, replace, replace, replaceAll

Methods inherited from class java.util.AbstractMap
toString

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map
compute, computeIfAbsent, computeIfPresent, containsValue, forEach, merge, putIfAbsent, remove, replace, replace, replaceAll

- Constructor Detail
  - LazyBindings
```
public LazyBindings()
```
  - LazyBindings
```
public LazyBindings(java.util.Map<java.lang.String,LazyBindings.Supplier> suppliers)
```
  - LazyBindings
```
public LazyBindings(java.util.Map<java.lang.String,LazyBindings.Supplier> suppliers,
                    java.util.Map<java.lang.String,java.lang.Object> wrapped)
```
- Method Detail
  - 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>
    
    Specified by:
    
    put in interface javax.script.Bindings
    
    Overrides:
    
    put in class java.util.HashMap<java.lang.String,java.lang.Object>
  - putAll
```
public void putAll(java.util.Map<? extends java.lang.String,?> toMerge)
```
    Specified by:
    
    putAll in interface java.util.Map<java.lang.String,java.lang.Object>
    
    Specified by:
    
    putAll in interface javax.script.Bindings
    
    Overrides:
    
    putAll in class java.util.HashMap<java.lang.String,java.lang.Object>
  - clear
```
public void clear()
```
    Specified by:
    
    clear in interface java.util.Map<java.lang.String,java.lang.Object>
    
    Overrides:
    
    clear in class java.util.HashMap<java.lang.String,java.lang.Object>
  - keySet
```
@NotNull
public @NotNull java.util.Set<java.lang.String> keySet()
```
    Specified by:
    
    keySet in interface java.util.Map<java.lang.String,java.lang.Object>
    
    Overrides:
    
    keySet in class java.util.HashMap<java.lang.String,java.lang.Object>
  - values
```
@NotNull
public @NotNull java.util.Collection<java.lang.Object> values()
```
    Specified by:
    
    values in interface java.util.Map<java.lang.String,java.lang.Object>
    
    Overrides:
    
    values in class java.util.HashMap<java.lang.String,java.lang.Object>
  - entrySet
```
@NotNull
public @NotNull 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>
    
    Overrides:
    
    entrySet in class java.util.HashMap<java.lang.String,java.lang.Object>
  - size
```
public int size()
```
    Specified by:
    
    size in interface java.util.Map<java.lang.String,java.lang.Object>
    
    Overrides:
    
    size in class java.util.HashMap<java.lang.String,java.lang.Object>
  - isEmpty
```
public boolean isEmpty()
```
    Specified by:
    
    isEmpty in interface java.util.Map<java.lang.String,java.lang.Object>
    
    Overrides:
    
    isEmpty in class java.util.HashMap<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>
    
    Specified by:
    
    containsKey in interface javax.script.Bindings
    
    Overrides:
    
    containsKey in class java.util.HashMap<java.lang.String,java.lang.Object>
  - get
```
public java.lang.Object get(java.lang.Object key)
```
    Specified by:
    
    get in interface java.util.Map<java.lang.String,java.lang.Object>
    
    Specified by:
    
    get in interface javax.script.Bindings
    
    Overrides:
    
    get in class java.util.HashMap<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>
    
    Specified by:
    
    remove in interface javax.script.Bindings
    
    Overrides:
    
    remove in class java.util.HashMap<java.lang.String,java.lang.Object>
  - equals
```
public boolean equals(java.lang.Object o)
```
    Specified by:
    
    equals in interface java.util.Map<java.lang.String,java.lang.Object>
    
    Overrides:
    
    equals in class java.util.AbstractMap<java.lang.String,java.lang.Object>
  - hashCode
```
public int hashCode()
```
    Specified by:
    
    hashCode in interface java.util.Map<java.lang.String,java.lang.Object>
    
    Overrides:
    
    hashCode in class java.util.AbstractMap<java.lang.String,java.lang.Object>
  - getOrDefault
```
public java.lang.Object getOrDefault(java.lang.Object key,
                                     java.lang.Object defaultValue)
```
    Specified by:
    
    getOrDefault in interface java.util.Map<java.lang.String,java.lang.Object>
    
    Overrides:
    
    getOrDefault in class java.util.HashMap<java.lang.String,java.lang.Object>

Class LazyBindings

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

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

Constructor Summary

Method Summary

Methods inherited from class java.util.HashMap

Methods inherited from class java.util.AbstractMap

Methods inherited from class java.lang.Object

Methods inherited from interface java.util.Map

Constructor Detail

LazyBindings

LazyBindings

LazyBindings

Method Detail

put

putAll

clear

keySet

values

entrySet

size

isEmpty

containsKey

get

remove

equals

hashCode

getOrDefault