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java.lang.Objectorg.apache.openjpa.jdbc.kernel.exps.AbstractVal
org.apache.openjpa.jdbc.kernel.exps.Const
org.apache.openjpa.jdbc.kernel.exps.ConstGetObjectId
class ConstGetObjectId
Obtaining the object id of a constant.
| Nested Class Summary |
|---|
| Nested classes/interfaces inherited from class org.apache.openjpa.jdbc.kernel.exps.Const |
|---|
Const.ConstExpState |
| Field Summary |
|---|
| Fields inherited from class org.apache.openjpa.jdbc.kernel.exps.AbstractVal |
|---|
FALSE, TRUE |
| Fields inherited from interface org.apache.openjpa.jdbc.kernel.exps.Val |
|---|
ABS_VAL, ARGS_VAL, CMP_EQUAL, COALESCE_VAL, CONCAT_VAL, FORCE_OUTER, GENERALCASE_VAL, INDEXOF_VAL, JOIN_REL, LENGTH_VAL, LOCATE_VAL, LOWER_VAL, MATH_VAL, NULL_CMP, NULLIF_VAL, SIMPLECASE_VAL, SQRT_VAL, SUBSTRING_VAL, TRIM_VAL, UPPER_VAL, VAL, WHENCONDITION_VAL, WHENSCALAR_VAL |
| Constructor Summary | |
|---|---|
ConstGetObjectId(Const constant)
Constructor. |
|
| Method Summary | |
|---|---|
void |
appendTo(Select sel,
ExpContext ctx,
ExpState state,
SQLBuffer sql,
int index)
Append the indexth SQL element to the given buffer. |
void |
calculateValue(Select sel,
ExpContext ctx,
ExpState state,
Val other,
ExpState otherState)
Calculate and cache the SQL for this value. |
Object |
getSQLValue(Select sel,
ExpContext ctx,
ExpState state)
Return the SQL value of this constant. |
Class |
getType()
Return the expected type for this value, or Object if
the type is unknown. |
Object |
getValue(ExpContext ctx,
ExpState state)
Return the value of this constant. |
Object |
getValue(Object[] params)
Return the value for this constant given the specified parameters. |
ExpState |
initialize(Select sel,
ExpContext ctx,
int flags)
Initialize the value. |
void |
setImplicitType(Class type)
Set the implicit type of the value, based on how it is used in the filter. |
| Methods inherited from class org.apache.openjpa.jdbc.kernel.exps.Const |
|---|
appendIsEmpty, appendIsNotEmpty, appendIsNotNull, appendIsNull, appendSize, getMetaData, groupBy, isSQLValueNull, length, load, orderBy, select, selectColumns, setMetaData |
| Methods inherited from class org.apache.openjpa.jdbc.kernel.exps.AbstractVal |
|---|
acceptVisit, appendIndex, appendType, getAlias, getId, getName, getPath, getSelectAs, isAggregate, isVariable, isXPath, setAlias, toDataStoreValue |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public ConstGetObjectId(Const constant)
| Method Detail |
|---|
public Class getType()
ValueObject if
the type is unknown.
public void setImplicitType(Class type)
ValueObject from Value.getType().
public Object getValue(Object[] params)
Constant
public Object getValue(ExpContext ctx,
ExpState state)
Const
getValue in class Const
public ExpState initialize(Select sel,
ExpContext ctx,
int flags)
Val
initialize in interface Valinitialize in class Const
public Object getSQLValue(Select sel,
ExpContext ctx,
ExpState state)
Const
getSQLValue in class Const
public void calculateValue(Select sel,
ExpContext ctx,
ExpState state,
Val other,
ExpState otherState)
Vallength or any append methods.
calculateValue in interface ValcalculateValue in class Constother - the value being compared to, or null if not a comparison
public void appendTo(Select sel,
ExpContext ctx,
ExpState state,
SQLBuffer sql,
int index)
Valindexth SQL element to the given buffer.
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