Class SQLTuple
- java.lang.Object
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- net.ontopia.persistence.query.sql.SQLTuple
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- All Implemented Interfaces:
SQLValueIF
public class SQLTuple extends Object implements SQLValueIF
INTERNAL: SQL value: tuple. Represents a list of nested SQL values. The arity is the same as the total arity of its nested values.
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Field Summary
Fields Modifier and Type Field Description protected String
alias
protected int
arity
protected FieldHandlerIF
fhandler
protected int
value_arity
protected SQLValueIF[]
values
protected Class
vtype
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Constructor Summary
Constructors Constructor Description SQLTuple(List<SQLValueIF> values)
SQLTuple(SQLValueIF[] values)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description boolean
equals(Object obj)
String
getAlias()
INTERNAL: The column alias to use if this value is included in the projection.int
getArity()
INTERNAL: Returns the [column] arity of the value.FieldHandlerIF
getFieldHandler()
INTERNAL: Returns the field handler for the columns.SQLValueIF
getReference()
INTERNAL: Returns the referenced value if one exists.int
getType()
INTERNAL: Returns the value class type.int
getValueArity()
INTERNAL: Returns the value arity of the value.SQLValueIF[]
getValues()
Class
getValueType()
INTERNAL: Returns the value type.boolean
isReference()
INTERNAL: Returns true if this value is a reference to another.void
setAlias(String alias)
INTERNAL: Sets the column alias.void
setFieldHandler(FieldHandlerIF fhandler)
INTERNAL: Sets the field handler for the value.void
setValues(SQLValueIF[] values)
void
setValueType(Class vtype)
INTERNAL: Sets the value type.String
toString()
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Field Detail
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values
protected SQLValueIF[] values
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arity
protected int arity
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value_arity
protected int value_arity
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alias
protected String alias
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vtype
protected Class vtype
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fhandler
protected FieldHandlerIF fhandler
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Constructor Detail
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SQLTuple
public SQLTuple(List<SQLValueIF> values)
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SQLTuple
public SQLTuple(SQLValueIF[] values)
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Method Detail
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getType
public int getType()
Description copied from interface:SQLValueIF
INTERNAL: Returns the value class type. The type is represented by one of the constants in theSQLValueIF
interface.- Specified by:
getType
in interfaceSQLValueIF
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getArity
public int getArity()
Description copied from interface:SQLValueIF
INTERNAL: Returns the [column] arity of the value. The number represents the number of "columns" the value spans, i.e. its composite width.- Specified by:
getArity
in interfaceSQLValueIF
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getValueArity
public int getValueArity()
Description copied from interface:SQLValueIF
INTERNAL: Returns the value arity of the value. This number refers to the number of nested values this value contains including itself. Most values therefore have a value arity of 1. Nested values may have an arity higher than 1. SQLTuple is currently the only nested value type.- Specified by:
getValueArity
in interfaceSQLValueIF
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getAlias
public String getAlias()
Description copied from interface:SQLValueIF
INTERNAL: The column alias to use if this value is included in the projection. The SQL select syntax is typically like "select value asfrom foo". - Specified by:
getAlias
in interfaceSQLValueIF
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setAlias
public void setAlias(String alias)
Description copied from interface:SQLValueIF
INTERNAL: Sets the column alias.- Specified by:
setAlias
in interfaceSQLValueIF
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isReference
public boolean isReference()
Description copied from interface:SQLValueIF
INTERNAL: Returns true if this value is a reference to another.- Specified by:
isReference
in interfaceSQLValueIF
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getReference
public SQLValueIF getReference()
Description copied from interface:SQLValueIF
INTERNAL: Returns the referenced value if one exists.- Specified by:
getReference
in interfaceSQLValueIF
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getValues
public SQLValueIF[] getValues()
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setValues
public void setValues(SQLValueIF[] values)
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getValueType
public Class getValueType()
Description copied from interface:SQLValueIF
INTERNAL: Returns the value type.- Specified by:
getValueType
in interfaceSQLValueIF
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setValueType
public void setValueType(Class vtype)
Description copied from interface:SQLValueIF
INTERNAL: Sets the value type.- Specified by:
setValueType
in interfaceSQLValueIF
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getFieldHandler
public FieldHandlerIF getFieldHandler()
Description copied from interface:SQLValueIF
INTERNAL: Returns the field handler for the columns.- Specified by:
getFieldHandler
in interfaceSQLValueIF
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setFieldHandler
public void setFieldHandler(FieldHandlerIF fhandler)
Description copied from interface:SQLValueIF
INTERNAL: Sets the field handler for the value.- Specified by:
setFieldHandler
in interfaceSQLValueIF
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