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java.lang.Objectorg.apache.derby.impl.sql.compile.BaseTypeCompiler
org.apache.derby.impl.sql.compile.UserDefinedTypeCompiler
public class UserDefinedTypeCompiler
Field Summary |
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Fields inherited from interface org.apache.derby.iapi.sql.compile.TypeCompiler |
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AVG_OP, BOOLEAN_MAXWIDTH_AS_CHAR, DEFAULT_DECIMAL_PRECISION, DEFAULT_DECIMAL_SCALE, DIVIDE_OP, DOUBLE_MAXWIDTH_AS_CHAR, INT_MAXWIDTH_AS_CHAR, LONGINT_MAXWIDTH_AS_CHAR, MAX_DECIMAL_PRECISION_SCALE, MINUS_OP, MOD_OP, PLUS_OP, REAL_MAXWIDTH_AS_CHAR, SMALLINT_MAXWIDTH_AS_CHAR, SUM_OP, TIMES_OP, TINYINT_MAXWIDTH_AS_CHAR |
Constructor Summary | |
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UserDefinedTypeCompiler()
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Method Summary | |
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boolean |
compatible(TypeId otherType)
Determine if this type is compatible to some other type (e.g. |
boolean |
convertible(TypeId otherType,
boolean forDataTypeFunction)
Right now, casting is not allowed from one user defined type to another. |
void |
generateDataValue(MethodBuilder mb,
int collationType,
LocalField field)
The caller will have pushed a DataValueFactory and value of that can be converted to the correct type, e.g. int for a SQL INTEGER. |
int |
getCastToCharWidth(DataTypeDescriptor dts)
Return the maximum width for this data type when cast to a char type. |
java.lang.String |
getCorrespondingPrimitiveTypeName()
Get the name of the corresponding Java type. |
java.lang.String |
interfaceName()
Get the name of the interface for this type. |
(package private) java.lang.String |
nullMethodName()
Return the method name to get a Derby DataValueDescriptor object of the correct type set to SQL NULL. |
boolean |
storable(TypeId otherType,
ClassFactory cf)
ANSI UDTs can only be stored into values of exactly their own type. |
Methods inherited from class org.apache.derby.impl.sql.compile.BaseTypeCompiler |
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dataValueMethodName, generateNull, getPrimitiveMethodName, getStoredFormatIdFromTypeId, getTypeCompiler, getTypeId, numberConvertible, numberStorable, pushCollationForDataValue, resolveArithmeticOperation, setTypeId, userTypeStorable |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public UserDefinedTypeCompiler()
Method Detail |
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public boolean convertible(TypeId otherType, boolean forDataTypeFunction)
otherType
- forDataTypeFunction
-
TypeCompiler.convertible(org.apache.derby.iapi.types.TypeId, boolean)
public boolean compatible(TypeId otherType)
TypeCompiler
otherType
- The CompilationType of the other type to compare
this type to
TypeCompiler.compatible(org.apache.derby.iapi.types.TypeId)
public boolean storable(TypeId otherType, ClassFactory cf)
otherType
- the type of the instance to store into this type.cf
- A ClassFactory
public java.lang.String interfaceName()
TypeCompiler
TypeCompiler.interfaceName()
public java.lang.String getCorrespondingPrimitiveTypeName()
TypeCompiler
TypeCompiler.getCorrespondingPrimitiveTypeName()
public int getCastToCharWidth(DataTypeDescriptor dts)
TypeCompiler
dts
- The associated DataTypeDescriptor for this TypeId.
TypeCompiler.getCastToCharWidth(org.apache.derby.iapi.types.DataTypeDescriptor)
java.lang.String nullMethodName()
BaseTypeCompiler
nullMethodName
in class BaseTypeCompiler
public void generateDataValue(MethodBuilder mb, int collationType, LocalField field)
BaseTypeCompiler
generateDataValue
in interface TypeCompiler
generateDataValue
in class BaseTypeCompiler
mb
- The method to put the expression incollationType
- For character DVDs, this will be used to determine
what Collator should be associated with the DVD which in turn will
decide whether to generate CollatorSQLcharDVDs or SQLcharDVDs. For
other types of DVDs, this parameter will be ignored.field
- LocalFieldTypeCompiler.generateDataValue(MethodBuilder, int, LocalField)
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Built on Thu 2011-03-10 11:54:14+0000, from revision ??? | ||||||||
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