Class SQLFunctionMapping
java.lang.Object
org.datanucleus.store.rdbms.mapping.java.JavaTypeMapping
org.datanucleus.store.rdbms.mapping.java.SingleFieldMapping
org.datanucleus.store.rdbms.mapping.java.SQLFunctionMapping
Mapping to represent the return value of an SQL function invocation.
With a generalised SQL function call we do not know the type of the function result, so only create the datastore mapping on processing of the first result.
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Field Summary
FieldsFields inherited from class org.datanucleus.store.rdbms.mapping.java.SingleFieldMapping
EXTENSION_CHECK_CONSTRAINT_VALUES
Fields inherited from class org.datanucleus.store.rdbms.mapping.java.JavaTypeMapping
absFieldNumber, columnMappings, mmd, referenceMapping, roleForMember, storeMgr, table, type
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionAccessor for the java type being mapped.Obtains a value fromdatastoreResults
at position specified byexprIndex
.protected void
Method to prepare a column mapping for use in the datastore.Methods inherited from class org.datanucleus.store.rdbms.mapping.java.SingleFieldMapping
getBoolean, getByte, getChar, getDefaultLength, getDouble, getFloat, getInt, getJavaTypeForColumnMapping, getLong, getShort, getString, getValidValues, initialize, setBoolean, setByte, setChar, setDouble, setFloat, setInt, setLong, setObject, setShort, setString
Methods inherited from class org.datanucleus.store.rdbms.mapping.java.JavaTypeMapping
addColumnMapping, equals, failureMessage, getAbsoluteFieldNumber, getColumnMapping, getColumnMappings, getColumnMetaDataForMember, getMemberMetaData, getNumberOfColumnMappings, getObject, getReferenceMapping, getRoleForMember, getStoreManager, getTable, getType, getValueForColumnMapping, hashCode, hasSimpleDatastoreRepresentation, includeInFetchStatement, includeInInsertStatement, includeInUpdateStatement, initialize, isNullable, isSerialised, performSetPostProcessing, representableAsStringLiteralInStatement, requiresSetPostProcessing, setAbsFieldNumber, setMemberMetaData, setObject, setReferenceMapping, setRoleForMember, setTable
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Field Details
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javaType
Class javaType
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Constructor Details
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SQLFunctionMapping
public SQLFunctionMapping()
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Method Details
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getJavaType
Description copied from class:JavaTypeMapping
Accessor for the java type being mapped. This is the java type that the mapping represents. Some examples :- if the field is of type "MyClass" then the mapping will be OIDMapping (or subclass) the javaType will be OID, and the type will be MyClass.
- if the field is of type "int" then the mapping will be IntegerMapping, the javaType will be Integer, and the type will be int.
- Specified by:
getJavaType
in classJavaTypeMapping
- Returns:
- The java type
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prepareColumnMapping
protected void prepareColumnMapping()Method to prepare a column mapping for use in the datastore. This creates the column in the table.- Overrides:
prepareColumnMapping
in classSingleFieldMapping
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getObject
Description copied from class:JavaTypeMapping
Obtains a value fromdatastoreResults
at position specified byexprIndex
.- Overrides:
getObject
in classSingleFieldMapping
- Parameters:
ec
- ExecutionContextresultSet
- ResultSetexprIndex
- the position of the value in the result- Returns:
- the value
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