Package org.yaml.snakeyaml.constructor
Class BaseConstructor
- java.lang.Object
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- org.yaml.snakeyaml.constructor.BaseConstructor
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- Direct Known Subclasses:
SafeConstructor
public abstract class BaseConstructor extends Object
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Field Summary
Fields Modifier and Type Field Description protected Composer
composer
protected Tag
rootTag
protected Map<Class<? extends Object>,TypeDescription>
typeDefinitions
protected Map<Tag,Class<? extends Object>>
typeTags
protected Map<NodeId,Construct>
yamlClassConstructors
It maps the node kind to the the Construct implementation.protected Map<Tag,Construct>
yamlConstructors
It maps the (explicit or implicit) tag to the Construct implementation.protected Map<String,Construct>
yamlMultiConstructors
It maps the (explicit or implicit) tag to the Construct implementation.
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Constructor Summary
Constructors Constructor Description BaseConstructor()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description TypeDescription
addTypeDescription(TypeDescription definition)
Make YAML aware how to parse a custom Class.boolean
checkData()
Check if more documents availableprotected Object
constructArray(SequenceNode node)
protected Object
constructArrayStep2(SequenceNode node, Object array)
protected Object
constructDocument(Node node)
Construct complete YAML document.protected Map<Object,Object>
constructMapping(MappingNode node)
protected void
constructMapping2ndStep(MappingNode node, Map<Object,Object> mapping)
protected Object
constructObject(Node node)
Construct object from the specified Node.protected Object
constructObjectNoCheck(Node node)
protected String
constructScalar(ScalarNode node)
protected List<? extends Object>
constructSequence(SequenceNode node)
protected void
constructSequenceStep2(SequenceNode node, Collection<Object> collection)
protected Set<Object>
constructSet(MappingNode node)
protected Set<? extends Object>
constructSet(SequenceNode node)
protected void
constructSet2ndStep(MappingNode node, Set<Object> set)
protected Object
createArray(Class<?> type, int size)
protected List<Object>
createDefaultList(int initSize)
protected Map<Object,Object>
createDefaultMap(int initSize)
protected Set<Object>
createDefaultSet(int initSize)
protected Object
finalizeConstruction(Node node, Object data)
protected Construct
getConstructor(Node node)
Get the constructor to construct the Node.Object
getData()
Construct and return the next documentPropertyUtils
getPropertyUtils()
Object
getSingleData(Class<?> type)
Ensure that the stream contains a single document and construct itboolean
isAllowDuplicateKeys()
boolean
isExplicitPropertyUtils()
protected Object
newInstance(Class<?> ancestor, Node node)
protected Object
newInstance(Class<?> ancestor, Node node, boolean tryDefault)
protected Object
newInstance(Node node)
protected List<Object>
newList(SequenceNode node)
protected Map<Object,Object>
newMap(MappingNode node)
protected Set<Object>
newSet(CollectionNode<?> node)
void
setAllowDuplicateKeys(boolean allowDuplicateKeys)
void
setComposer(Composer composer)
void
setPropertyUtils(PropertyUtils propertyUtils)
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Field Detail
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yamlClassConstructors
protected final Map<NodeId,Construct> yamlClassConstructors
It maps the node kind to the the Construct implementation. When the runtime class is known then the implicit tag is ignored.
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yamlConstructors
protected final Map<Tag,Construct> yamlConstructors
It maps the (explicit or implicit) tag to the Construct implementation. It is used: 1) explicit tag - if present. 2) implicit tag - when the runtime class of the instance is unknown (the node has the Object.class)
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yamlMultiConstructors
protected final Map<String,Construct> yamlMultiConstructors
It maps the (explicit or implicit) tag to the Construct implementation. It is used when no exact match found.
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composer
protected Composer composer
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rootTag
protected Tag rootTag
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typeDefinitions
protected final Map<Class<? extends Object>,TypeDescription> typeDefinitions
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Method Detail
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setComposer
public void setComposer(Composer composer)
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checkData
public boolean checkData()
Check if more documents available- Returns:
- true when there are more YAML documents in the stream
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getData
public Object getData()
Construct and return the next document- Returns:
- constructed instance
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getSingleData
public Object getSingleData(Class<?> type)
Ensure that the stream contains a single document and construct it- Parameters:
type
- the class of the instance being created- Returns:
- constructed instance
- Throws:
ComposerException
- in case there are more documents in the stream
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constructDocument
protected final Object constructDocument(Node node)
Construct complete YAML document. Call the second step in case of recursive structures. At the end cleans all the state.- Parameters:
node
- root Node- Returns:
- Java instance
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constructObject
protected Object constructObject(Node node)
Construct object from the specified Node. Return existing instance if the node is already constructed.- Parameters:
node
- Node to be constructed- Returns:
- Java instance
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getConstructor
protected Construct getConstructor(Node node)
Get the constructor to construct the Node. For implicit tags if the runtime class is known a dedicated Construct implementation is used. Otherwise the constructor is chosen by the tag.
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constructScalar
protected String constructScalar(ScalarNode node)
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newInstance
protected final Object newInstance(Class<?> ancestor, Node node) throws InstantiationException
- Throws:
InstantiationException
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newInstance
protected Object newInstance(Class<?> ancestor, Node node, boolean tryDefault) throws InstantiationException
- Throws:
InstantiationException
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newSet
protected Set<Object> newSet(CollectionNode<?> node)
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newList
protected List<Object> newList(SequenceNode node)
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newMap
protected Map<Object,Object> newMap(MappingNode node)
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constructSequence
protected List<? extends Object> constructSequence(SequenceNode node)
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constructSet
protected Set<? extends Object> constructSet(SequenceNode node)
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constructArray
protected Object constructArray(SequenceNode node)
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constructSequenceStep2
protected void constructSequenceStep2(SequenceNode node, Collection<Object> collection)
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constructArrayStep2
protected Object constructArrayStep2(SequenceNode node, Object array)
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constructSet
protected Set<Object> constructSet(MappingNode node)
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constructMapping
protected Map<Object,Object> constructMapping(MappingNode node)
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constructMapping2ndStep
protected void constructMapping2ndStep(MappingNode node, Map<Object,Object> mapping)
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constructSet2ndStep
protected void constructSet2ndStep(MappingNode node, Set<Object> set)
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setPropertyUtils
public void setPropertyUtils(PropertyUtils propertyUtils)
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getPropertyUtils
public final PropertyUtils getPropertyUtils()
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addTypeDescription
public TypeDescription addTypeDescription(TypeDescription definition)
Make YAML aware how to parse a custom Class. If there is no root Class assigned in constructor then the 'root' property of this definition is respected.- Parameters:
definition
- to be added to the Constructor- Returns:
- the previous value associated with definition, or null if there was no mapping for definition.
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isExplicitPropertyUtils
public final boolean isExplicitPropertyUtils()
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isAllowDuplicateKeys
public boolean isAllowDuplicateKeys()
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setAllowDuplicateKeys
public void setAllowDuplicateKeys(boolean allowDuplicateKeys)
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