Package org.apache.cayenne.access
Class DataNode
java.lang.Object
org.apache.cayenne.access.DataNode
- All Implemented Interfaces:
QueryEngine
public class DataNode extends Object implements QueryEngine
An abstraction of a single physical data storage. This is usually a database
server, but can potentially be some other storage type like an LDAP server,
etc.
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Field Summary
Fields Modifier and Type Field Description protected DbAdapteradapterprotected Map<String,DataMap>dataMapsprotected DataSourcedataSourceprotected StringdataSourceFactoryprotected StringdataSourceLocationprotected EntityResolverentityResolverprotected Stringnameprotected SchemaUpdateStrategyschemaUpdateStrategy -
Constructor Summary
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Method Summary
Modifier and Type Method Description voidaddDataMap(DataMap map)Adds a DataMap to be handled by this node.BatchTranslatorbatchTranslator(BatchQuery query, String trimFunction)DbAdaptergetAdapter()Returns DbAdapter object.BatchTranslatorFactorygetBatchTranslatorFactory()DataMapgetDataMap(String name)Returns datamap with specified name, null if none presentCollection<DataMap>getDataMaps()Returns an unmodifiable collection of DataMaps handled by this DataNode.DataSourcegetDataSource()Returns DataSource used by this DataNode to obtain connections.StringgetDataSourceFactory()Returns a name of DataSourceFactory class for this node.EntityResolvergetEntityResolver()Returns EntityResolver that handles DataMaps of this node.JdbcEventLoggergetJdbcEventLogger()StringgetName()Returns node name.RowReaderFactorygetRowReaderFactory()SchemaUpdateStrategygetSchemaUpdateStrategy()SelectTranslatorFactorygetSelectTranslatorFactory()SQLTemplateProcessorgetSqlTemplateProcessor()DataNodelookupDataNode(DataMap dataMap)Returns a DataNode that should handle queries for all DataMap components.voidperformQueries(Collection<? extends Query> queries, OperationObserver callback)Runs queries using Connection obtained from internal DataSource.voidremoveDataMap(String mapName)voidremoveDataMap(DataMap map)RowReader<?>rowReader(RowDescriptor descriptor, QueryMetadata queryMetadata)Creates aRowReaderusing internalRowReaderFactory.RowReader<?>rowReader(RowDescriptor descriptor, QueryMetadata queryMetadata, Map<ObjAttribute,ColumnDescriptor> attributeOverrides)Creates aRowReaderusing internalRowReaderFactory.SelectTranslatorselectTranslator(SelectQuery<?> query)voidsetAdapter(DbAdapter adapter)voidsetBatchTranslatorFactory(BatchTranslatorFactory batchTranslatorFactory)voidsetDataMaps(Collection<DataMap> dataMaps)voidsetDataSource(DataSource dataSource)voidsetDataSourceFactory(String dataSourceFactory)voidsetEntityResolver(EntityResolver entityResolver)Sets EntityResolver.voidsetJdbcEventLogger(JdbcEventLogger logger)voidsetName(String name)voidsetRowReaderFactory(RowReaderFactory rowReaderFactory)voidsetSchemaUpdateStrategy(SchemaUpdateStrategy schemaUpdateStrategy)voidsetSelectTranslatorFactory(SelectTranslatorFactory selectTranslatorFactory)voidsetSqlTemplateProcessor(SQLTemplateProcessor sqlTemplateProcessor)StringtoString()
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Field Details
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name
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dataSource
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adapter
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dataSourceLocation
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dataSourceFactory
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entityResolver
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schemaUpdateStrategy
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dataMaps
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Constructor Details
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DataNode
public DataNode()Creates a new unnamed DataNode. -
DataNode
Creates a new DataNode, assigning it a name.
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Method Details
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getSchemaUpdateStrategy
- Since:
- 3.0
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setSchemaUpdateStrategy
- Since:
- 3.0
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getJdbcEventLogger
- Since:
- 3.1
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setJdbcEventLogger
- Since:
- 3.1
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getName
Returns node name. Name is used to uniquely identify DataNode within a DataDomain. -
setName
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getDataSourceFactory
Returns a name of DataSourceFactory class for this node. -
setDataSourceFactory
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getDataMaps
Returns an unmodifiable collection of DataMaps handled by this DataNode. -
getDataMap
Returns datamap with specified name, null if none present -
setDataMaps
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addDataMap
Adds a DataMap to be handled by this node. -
removeDataMap
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removeDataMap
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getDataSource
Returns DataSource used by this DataNode to obtain connections. -
setDataSource
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getAdapter
Returns DbAdapter object. This is a plugin that handles RDBMS vendor-specific features. -
setAdapter
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lookupDataNode
Returns a DataNode that should handle queries for all DataMap components.- Since:
- 1.1
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performQueries
Runs queries using Connection obtained from internal DataSource.- Specified by:
performQueriesin interfaceQueryEngine- Since:
- 1.1
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getEntityResolver
Returns EntityResolver that handles DataMaps of this node.- Specified by:
getEntityResolverin interfaceQueryEngine
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setEntityResolver
Sets EntityResolver. DataNode relies on externally set EntityResolver, so if the node is created outside of DataDomain stack, a valid EntityResolver must be provided explicitly.- Since:
- 1.1
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toString
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rowReader
Creates aRowReaderusing internalRowReaderFactory.- Since:
- 4.0
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rowReader
public RowReader<?> rowReader(RowDescriptor descriptor, QueryMetadata queryMetadata, Map<ObjAttribute,ColumnDescriptor> attributeOverrides)Creates aRowReaderusing internalRowReaderFactory.- Since:
- 4.0
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batchTranslator
- Since:
- 4.0
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selectTranslator
- Since:
- 4.0
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getRowReaderFactory
- Since:
- 4.0
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setRowReaderFactory
- Since:
- 4.0
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getBatchTranslatorFactory
- Since:
- 4.0
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setBatchTranslatorFactory
- Since:
- 4.0
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getSqlTemplateProcessor
- Since:
- 4.0
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setSqlTemplateProcessor
- Since:
- 4.0
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getSelectTranslatorFactory
- Since:
- 4.0
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setSelectTranslatorFactory
- Since:
- 4.0
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