DefaultHelperRegistry (The Adobe AEM Quickstart and Web Application.)

java.lang.Object
- com.github.jknack.handlebars.helper.DefaultHelperRegistry

All Implemented Interfaces:

HelperRegistry
```
public class DefaultHelperRegistry
extends java.lang.Object
implements HelperRegistry
```
Default implementation of HelperRegistry.

Since:

1.2.0

Field Summary
- Fields inherited from interface com.github.jknack.handlebars.HelperRegistry
  HELPER_MISSING

Constructor Summary

Constructors
Constructor and Description

DefaultHelperRegistry()

Constructors
Constructor and Description
`DefaultHelperRegistry()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`Decorator`	`decorator(java.lang.String name)` Find a decorator by name.
`<C> Helper<C>`	`helper(java.lang.String name)` Find a helper by name.
`java.util.Set<java.util.Map.Entry<java.lang.String,Helper<?>>>`	`helpers()` List all the helpers from registry.
`HelperRegistry`	`registerDecorator(java.lang.String name, Decorator decorator)` Register a decorator and make it accessible via `HelperRegistry.decorator(String)`.
`<H> HelperRegistry`	`registerHelper(java.lang.String name, Helper<H> helper)` Register a helper in the helper registry.
`<H> HelperRegistry`	`registerHelperMissing(Helper<H> helper)` Register the special helper missing in the registry.
`HelperRegistry`	`registerHelpers(java.lang.Class<?> helperSource)` Register all the helper methods for the given helper source.
`HelperRegistry`	`registerHelpers(java.io.File input)` Register helpers from a JavaScript source.
`HelperRegistry`	`registerHelpers(java.lang.Object helperSource)` Register all the helper methods for the given helper source.
`HelperRegistry`	`registerHelpers(java.lang.String filename, java.io.InputStream source)` Register helpers from a JavaScript source.
`HelperRegistry`	`registerHelpers(java.lang.String filename, java.io.Reader source)` Register helpers from a JavaScript source.
`HelperRegistry`	`registerHelpers(java.lang.String filename, java.lang.String source)` Register helpers from a JavaScript source.
`HelperRegistry`	`registerHelpers(java.net.URI location)` Register helpers from a JavaScript source.
`DefaultHelperRegistry`	`setCharset(java.nio.charset.Charset charset)` Set the charset to use.

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

- Constructor Detail
  - DefaultHelperRegistry
```
public DefaultHelperRegistry()
```
- Method Detail
  - helper
```
public <C> Helper<C> helper(java.lang.String name)
```
    Description copied from interface: HelperRegistry
    
    Find a helper by name.
    
    Specified by:
    
    helper in interface HelperRegistry
    
    Type Parameters:
    
    C - The helper runtime type.
    
    Parameters:
    
    name - The helper's name. Required.
    
    Returns:
    
    A helper or null if it's not found.
  - registerHelper
```
public <H> HelperRegistry registerHelper(java.lang.String name,
                                         Helper<H> helper)
```
    Description copied from interface: HelperRegistry
    
    Register a helper in the helper registry.
    
    Specified by:
    
    registerHelper in interface HelperRegistry
    
    Type Parameters:
    
    H - The helper runtime type.
    
    Parameters:
    
    name - The helper's name. Required.
    
    helper - The helper object. Required.
    
    Returns:
    
    This handlebars.
  - registerHelperMissing
```
public <H> HelperRegistry registerHelperMissing(Helper<H> helper)
```
    Description copied from interface: HelperRegistry
    
    Register the special helper missing in the registry.
    
    Specified by:
    
    registerHelperMissing in interface HelperRegistry
    
    Type Parameters:
    
    H - The helper runtime type.
    
    Parameters:
    
    helper - The helper object. Required.
    
    Returns:
    
    This handlebars.
  - registerHelpers
```
public HelperRegistry registerHelpers(java.lang.Object helperSource)
```
    Description copied from interface: HelperRegistry
    Register all the helper methods for the given helper source.
    
    A helper method looks like:
```
 public static? CharSequence methodName(context?, parameter*, options?) {
 }
 
```
    Where:
    - A method can/can't be static
    - The method's name became the helper's name
    - Context, parameters and options are all optional
    - If context and options are present they must be the first and last method arguments.
    Instance and static methods will be registered as helpers.
    Specified by:
    
    registerHelpers in interface HelperRegistry
    
    Parameters:
    
    helperSource - The helper source. Required.
    
    Returns:
    
    This handlebars object.
  - registerHelpers
```
public HelperRegistry registerHelpers(java.lang.Class<?> helperSource)
```
    Description copied from interface: HelperRegistry
    Register all the helper methods for the given helper source.
    
    A helper method looks like:
```
 public static? CharSequence methodName(context?, parameter*, options?) {
 }
 
```
    Where:
    - A method can/can't be static
    - The method's name became the helper's name
    - Context, parameters and options are all optional
    - If context and options are present they must be the first and last method arguments.
    Only static methods will be registered as helpers.
    Enums are supported too
    Specified by:
    
    registerHelpers in interface HelperRegistry
    
    Parameters:
    
    helperSource - The helper source. Enums are supported. Required.
    
    Returns:
    
    This handlebars object.
  - registerHelpers
```
public HelperRegistry registerHelpers(java.net.URI location)
                               throws java.lang.Exception
```
    Description copied from interface: HelperRegistry
    Register helpers from a JavaScript source.
    
    A JavaScript source file looks like:
```
  Handlebars.registerHelper('hey', function (context) {
    return 'Hi ' + context.name;
  });
  ...
  Handlebars.registerHelper('hey', function (context, options) {
    return 'Hi ' + context.name + options.hash['x'];
  });
  ...
  Handlebars.registerHelper('hey', function (context, p1, p2, options) {
    return 'Hi ' + context.name + p1 + p2 + options.hash['x'];
  });
  ...
 
```
    To keep your helpers reusable between server and client avoid DOM manipulation.
    Specified by:
    
    registerHelpers in interface HelperRegistry
    
    Parameters:
    
    location - A classpath location. Required.
    
    Returns:
    
    This handlebars object.
    
    Throws:
    
    java.lang.Exception - If the JavaScript helpers can't be registered.
  - registerHelpers
```
public HelperRegistry registerHelpers(java.io.File input)
                               throws java.lang.Exception
```
    Description copied from interface: HelperRegistry
    Register helpers from a JavaScript source.
    
    A JavaScript source file looks like:
```
  Handlebars.registerHelper('hey', function (context) {
    return 'Hi ' + context.name;
  });
  ...
  Handlebars.registerHelper('hey', function (context, options) {
    return 'Hi ' + context.name + options.hash['x'];
  });
  ...
  Handlebars.registerHelper('hey', function (context, p1, p2, options) {
    return 'Hi ' + context.name + p1 + p2 + options.hash['x'];
  });
  ...
 
```
    To keep your helpers reusable between server and client avoid DOM manipulation.
    Specified by:
    
    registerHelpers in interface HelperRegistry
    
    Parameters:
    
    input - A JavaScript file name. Required.
    
    Returns:
    
    This handlebars object.
    
    Throws:
    
    java.lang.Exception - If the JavaScript helpers can't be registered.
  - registerHelpers
```
public HelperRegistry registerHelpers(java.lang.String filename,
                                      java.io.Reader source)
                               throws java.lang.Exception
```
    Description copied from interface: HelperRegistry
    Register helpers from a JavaScript source.
    
    A JavaScript source file looks like:
```
  Handlebars.registerHelper('hey', function (context) {
    return 'Hi ' + context.name;
  });
  ...
  Handlebars.registerHelper('hey', function (context, options) {
    return 'Hi ' + context.name + options.hash['x'];
  });
  ...
  Handlebars.registerHelper('hey', function (context, p1, p2, options) {
    return 'Hi ' + context.name + p1 + p2 + options.hash['x'];
  });
  ...
 
```
    To keep your helpers reusable between server and client avoid DOM manipulation.
    Specified by:
    
    registerHelpers in interface HelperRegistry
    
    Parameters:
    
    filename - The file name (just for debugging purpose). Required.
    
    source - The JavaScript source. Required.
    
    Returns:
    
    This handlebars object.
    
    Throws:
    
    java.lang.Exception - If the JavaScript helpers can't be registered.
  - registerHelpers
```
public HelperRegistry registerHelpers(java.lang.String filename,
                                      java.io.InputStream source)
                               throws java.lang.Exception
```
    Description copied from interface: HelperRegistry
    Register helpers from a JavaScript source.
    
    A JavaScript source file looks like:
```
  Handlebars.registerHelper('hey', function (context) {
    return 'Hi ' + context.name;
  });
  ...
  Handlebars.registerHelper('hey', function (context, options) {
    return 'Hi ' + context.name + options.hash['x'];
  });
  ...
  Handlebars.registerHelper('hey', function (context, p1, p2, options) {
    return 'Hi ' + context.name + p1 + p2 + options.hash['x'];
  });
  ...
 
```
    To keep your helpers reusable between server and client avoid DOM manipulation.
    Specified by:
    
    registerHelpers in interface HelperRegistry
    
    Parameters:
    
    filename - The file name (just for debugging purpose). Required.
    
    source - The JavaScript source. Required.
    
    Returns:
    
    This handlebars object.
    
    Throws:
    
    java.lang.Exception - If the JavaScript helpers can't be registered.
  - registerHelpers
```
public HelperRegistry registerHelpers(java.lang.String filename,
                                      java.lang.String source)
                               throws java.io.IOException
```
    Description copied from interface: HelperRegistry
    Register helpers from a JavaScript source.
    
    A JavaScript source file looks like:
```
  Handlebars.registerHelper('hey', function (context) {
    return 'Hi ' + context.name;
  });
  ...
  Handlebars.registerHelper('hey', function (context, options) {
    return 'Hi ' + context.name + options.hash['x'];
  });
  ...
  Handlebars.registerHelper('hey', function (context, p1, p2, options) {
    return 'Hi ' + context.name + p1 + p2 + options.hash['x'];
  });
  ...
 
```
    To keep your helpers reusable between server and client avoid DOM manipulation.
    Specified by:
    
    registerHelpers in interface HelperRegistry
    
    Parameters:
    
    filename - The file name (just for debugging purpose). Required.
    
    source - The JavaScript source. Required.
    
    Returns:
    
    This registry.
    
    Throws:
    
    java.io.IOException - If the JavaScript helpers can't be registered.
  - helpers
```
public java.util.Set<java.util.Map.Entry<java.lang.String,Helper<?>>> helpers()
```
    Description copied from interface: HelperRegistry
    
    List all the helpers from registry.
    
    Specified by:
    
    helpers in interface HelperRegistry
    
    Returns:
    
    Available helpers in the registry.
  - decorator
```
public Decorator decorator(java.lang.String name)
```
    Description copied from interface: HelperRegistry
    
    Find a decorator by name.
    
    Specified by:
    
    decorator in interface HelperRegistry
    
    Parameters:
    
    name - A decorator's name.
    
    Returns:
    
    A decorator or null.
  - registerDecorator
```
public HelperRegistry registerDecorator(java.lang.String name,
                                        Decorator decorator)
```
    Description copied from interface: HelperRegistry
    
    Register a decorator and make it accessible via HelperRegistry.decorator(String).
    
    Specified by:
    
    registerDecorator in interface HelperRegistry
    
    Parameters:
    
    name - A decorator's name. Required.
    
    decorator - A decorator. Required.
    
    Returns:
    
    This registry.
  - setCharset
```
public DefaultHelperRegistry setCharset(java.nio.charset.Charset charset)
```
    Description copied from interface: HelperRegistry
    
    Set the charset to use.
    
    Specified by:
    
    setCharset in interface HelperRegistry
    
    Parameters:
    
    charset - Charset.
    
    Returns:
    
    This registry.

Class DefaultHelperRegistry

Field Summary

Fields inherited from interface com.github.jknack.handlebars.HelperRegistry

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

DefaultHelperRegistry

Method Detail

helper

registerHelper

registerHelperMissing

registerHelpers

registerHelpers

registerHelpers

registerHelpers

registerHelpers

registerHelpers

registerHelpers

helpers

decorator

registerDecorator

setCharset