Module org.refcodes.schema

Package org.refcodes.schema

Class Schema

java.lang.Object

java.util.AbstractMap<String,Object>

java.util.HashMap<String,Object>

org.refcodes.schema.Schema

All Implemented Interfaces:

Serializable, Cloneable, Map<String,Object>, org.refcodes.mixin.AliasAccessor, org.refcodes.mixin.ChildrenAccessor<Schema[]>, org.refcodes.mixin.DescriptionAccessor, org.refcodes.mixin.TypeAccessor

public class Schema
extends HashMap<String,Object>
implements org.refcodes.mixin.ChildrenAccessor<Schema[]>, org.refcodes.mixin.TypeAccessor, org.refcodes.mixin.AliasAccessor, org.refcodes.mixin.DescriptionAccessor

A Schema describes a nested data structure (having 0..n Schema children) whilst not being the data structure itself. A documentation in JSON or XML notation can be produced from a Schema instance for debugging or diagnostic purposes (see JsonVisitor as well as XmlVisitor) by invoking the visit(SchemaVisitor) method (also custom SchemaVisitor classes my be programmed).For description purposes, any descriptive attribute can be added as a key with the according value, as a Schema extends the Map interface. The Schema is a useful base class when implementing a package's Schema type. By default it's toString() method produces a JSON alike String representation of this Schema instances alongside its children by uses the JsonVisitor type applied to the visit(SchemaVisitor) method.

See Also:

• Serialized Form

Nested Class Summary

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

AbstractMap.SimpleEntry<K,V>, AbstractMap.SimpleImmutableEntry<K,V>

Nested classes/interfaces inherited from interface org.refcodes.mixin.AliasAccessor

org.refcodes.mixin.AliasAccessor.AliasBuilder<B extends org.refcodes.mixin.AliasAccessor.AliasBuilder<B>>, org.refcodes.mixin.AliasAccessor.AliasMutator, org.refcodes.mixin.AliasAccessor.AliasProperty

Nested classes/interfaces inherited from interface org.refcodes.mixin.ChildrenAccessor

org.refcodes.mixin.ChildrenAccessor.ChildrenBuilder<T,B extends org.refcodes.mixin.ChildrenAccessor.ChildrenBuilder<T,B>>, org.refcodes.mixin.ChildrenAccessor.ChildrenMutator<T>, org.refcodes.mixin.ChildrenAccessor.ChildrenProperty<T>

Nested classes/interfaces inherited from interface org.refcodes.mixin.DescriptionAccessor

org.refcodes.mixin.DescriptionAccessor.DescriptionBuilder<B extends org.refcodes.mixin.DescriptionAccessor.DescriptionBuilder<B>>, org.refcodes.mixin.DescriptionAccessor.DescriptionMutator, org.refcodes.mixin.DescriptionAccessor.DescriptionProperty

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

Map.Entry<K,V>

Nested classes/interfaces inherited from interface org.refcodes.mixin.TypeAccessor

org.refcodes.mixin.TypeAccessor.TypeBuilder<T,B extends org.refcodes.mixin.TypeAccessor.TypeBuilder<T,B>>, org.refcodes.mixin.TypeAccessor.TypeMutator<T>, org.refcodes.mixin.TypeAccessor.TypeProperty<T>

Field Summary

Fields

Modifier and Type	Field	Description
static String	ALIAS
static String	COMMENT
static String	DESCRIPTION
static String	EXCEPTION
static String	KEY
static String	TYPE
static String	VALUE
static String	VERBOSE

Constructor Summary

Constructors

Constructor	Description
Schema(Class<?> aType, String aDescription)	Constructs a Schema with the provided arguments.
Schema(Class<?> aType, String aDescription, Schema... aChildren)	Constructs a Schema with the provided arguments.
Schema(Class<?> aType, Schema aSchema)	Constructs a Schema with the provided arguments.
Schema(String aAlias, Class<?> aType)	Constructs a Schema with the provided arguments.
Schema(String aAlias, Class<?> aType, String aDescription)	Constructs a Schema with the provided arguments.
Schema(String aAlias, Class<?> aType, String aDescription, Schema... aChildren)	Constructs a Schema with the provided arguments.
Schema(Schema aSchema)	Constructs a Schema with the properties of the provided Schema ("copy constructor"),.
Schema(Schema aSchema, Schema... aChildren)	Constructs a Schema with the properties of the provided Schema ("copy constructor"),.

Method Summary

Modifier and Type	Method	Description
String	getAlias()
Schema[]	getChildren()
String	getDescription()
Class<?>	getType()
String	toString()	Uses the JsonVisitor type applied to the visit(SchemaVisitor) method to produce a JSON alike String representation of this Schema instances alongside its children.
<T> T	visit(SchemaVisitor<T> aVisitor)	Visits this Schema instance, the provided SchemaVisitor visitor is invoked with the result's of the Schema instance's children (as of visit(SchemaVisitor) and this Schema instance to produce a result.

Methods inherited from class java.util.HashMap

clear, clone, compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, entrySet, forEach, get, getOrDefault, isEmpty, keySet, merge, newHashMap, put, putAll, putIfAbsent, remove, remove, replace, replace, replaceAll, size, values

Methods inherited from class java.util.AbstractMap

equals, hashCode

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Map

equals, hashCode

Field Details

ALIAS

public static String ALIAS

COMMENT

public static String COMMENT

DESCRIPTION

public static String DESCRIPTION

EXCEPTION

public static String EXCEPTION

KEY

public static String KEY

TYPE

public static String TYPE

VALUE

public static String VALUE

VERBOSE

public static String VERBOSE

Constructor Details

Schema

public Schema(Class<?> aType,
 String aDescription)

Constructs a Schema with the provided arguments.

Parameters:

aType - The type providing the this Schema instance.

aDescription - The description of the schema described by the Schema providing type.

Schema

public Schema(String aAlias,
 Class<?> aType)

Constructs a Schema with the provided arguments.

Parameters:

aAlias - The alias (name) of the schema described by the Schema providing type.

aType - The type providing the this Schema instance.

Schema

public Schema(String aAlias,
 Class<?> aType,
 String aDescription)

Constructs a Schema with the provided arguments.

Parameters:

aAlias - The alias (name) of the schema described by the Schema providing type.

aType - The type providing the this Schema instance.

aDescription - The description of the schema described by the Schema providing type.

Schema

public Schema(Class<?> aType,
 String aDescription,
 Schema... aChildren)

Constructs a Schema with the provided arguments.

Parameters:

aType - The type providing the this Schema instance.

aDescription - The description of the schema described by the Schema providing type.

aChildren - The children's Schema descriptions representing part of the Schema providing type.

Schema

public Schema(String aAlias,
 Class<?> aType,
 String aDescription,
 Schema... aChildren)

Constructs a Schema with the provided arguments.

Parameters:

aAlias - The alias (name) of the schema described by the Schema providing type.

aType - The type providing the this Schema instance.

aDescription - The description of the schema described by the Schema providing type.

aChildren - The children's Schema descriptions representing part of the Schema providing type.

Schema

public Schema(Schema aSchema)

Constructs a Schema with the properties of the provided Schema ("copy constructor"),.

Parameters:

aSchema - The Schema from which to copy the attributes.

Schema

public Schema(Class<?> aType,
 Schema aSchema)

Constructs a Schema with the provided arguments.

Parameters:

aType - The type providing the this Schema instance.

aSchema - The Schema from which to copy the attributes.

Schema

public Schema(Schema aSchema,
 Schema... aChildren)

Constructs a Schema with the properties of the provided Schema ("copy constructor"),.

Parameters:

aSchema - The Schema from which to copy the attributes.

aChildren - The children's Schema descriptions representing part of the Schema providing type.

Method Details

getAlias

public String getAlias()

Specified by:

getAlias in interface org.refcodes.mixin.AliasAccessor

getType

public Class<?> getType()

Specified by:

getType in interface org.refcodes.mixin.TypeAccessor

getDescription

public String getDescription()

Specified by:

getDescription in interface org.refcodes.mixin.DescriptionAccessor

getChildren

public Schema[] getChildren()

Specified by:

getChildren in interface org.refcodes.mixin.ChildrenAccessor<Schema[]>

visit

public <T> T visit(SchemaVisitor<T> aVisitor)

Visits this Schema instance, the provided SchemaVisitor visitor is invoked with the result's of the Schema instance's children (as of visit(SchemaVisitor) and this Schema instance to produce a result. Therefore this method visits (invokes the SchemaVisitor.visit(Schema, java.util.Collection) method for) the leaves first, traversing down till the root Schema instance (the one where the visit(SchemaVisitor) method was initially called).

Type Parameters:

T - The type of the value which the visitor produces.

Parameters:

aVisitor - The SchemaVisitor visitor to traverse this Schema instance.

Returns:

The according result produced by the SchemaVisitor instance.

toString

public String toString()

Uses the JsonVisitor type applied to the visit(SchemaVisitor) method to produce a JSON alike String representation of this Schema instances alongside its children.

Overrides:

toString in class AbstractMap<String,Object>