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java.lang.Objectorg.apache.openjpa.jdbc.kernel.exps.AbstractVal
org.apache.openjpa.jdbc.kernel.exps.Const
abstract class Const
A literal or parameter in the filter.
| Nested Class Summary | |
|---|---|
protected static class |
Const.ConstExpState
Constant expression state. |
| 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 | |
|---|---|
Const()
|
|
| Method Summary | |
|---|---|
void |
appendIsEmpty(Select sel,
ExpContext ctx,
ExpState state,
SQLBuffer sql)
Append the SQL testing whether this value is empty to the given buffer. |
void |
appendIsNotEmpty(Select sel,
ExpContext ctx,
ExpState state,
SQLBuffer sql)
Append the SQL testing whether this value is not empty to the given buffer. |
void |
appendIsNotNull(Select sel,
ExpContext ctx,
ExpState state,
SQLBuffer sql)
Append the SQL testing whether this value is not null to the given buffer. |
void |
appendIsNull(Select sel,
ExpContext ctx,
ExpState state,
SQLBuffer sql)
Append the SQL testing whether this value is null to the given buffer. |
void |
appendSize(Select sel,
ExpContext ctx,
ExpState state,
SQLBuffer sql)
Append the SQL checking the size of this value. |
void |
calculateValue(Select sel,
ExpContext ctx,
ExpState state,
Val other,
ExpState otherState)
Calculate and cache the SQL for this value. |
ClassMetaData |
getMetaData()
Return any associated persistent type. |
Object |
getSQLValue(Select sel,
ExpContext ctx,
ExpState state)
Return the SQL value of this constant. |
Object |
getValue(ExpContext ctx,
ExpState state)
Return the value of this constant. |
void |
groupBy(Select sel,
ExpContext ctx,
ExpState state)
Group by this value. |
ExpState |
initialize(Select sel,
ExpContext ctx,
int flags)
Initialize the value. |
boolean |
isSQLValueNull(Select sel,
ExpContext ctx,
ExpState state)
Return true if this constant's SQL value is equivalent to NULL. |
int |
length(Select sel,
ExpContext ctx,
ExpState state)
Return the number of SQL elements in this value. |
Object |
load(ExpContext ctx,
ExpState state,
Result res)
Load the data for this value. |
void |
orderBy(Select sel,
ExpContext ctx,
ExpState state,
boolean asc)
Order by this value. |
void |
select(Select sel,
ExpContext ctx,
ExpState state,
boolean pks)
Select the data for this value. |
void |
selectColumns(Select sel,
ExpContext ctx,
ExpState state,
boolean pks)
Select just the columns for this value. |
void |
setMetaData(ClassMetaData meta)
Associate a persistent type with this value. |
| 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 |
| Methods inherited from interface org.apache.openjpa.kernel.exps.Constant |
|---|
getValue |
| Methods inherited from interface org.apache.openjpa.jdbc.kernel.exps.Val |
|---|
appendTo |
| Methods inherited from interface org.apache.openjpa.kernel.exps.Value |
|---|
getType, setImplicitType |
| Constructor Detail |
|---|
Const()
| Method Detail |
|---|
public ClassMetaData getMetaData()
Value
getMetaData in interface Valuepublic void setMetaData(ClassMetaData meta)
Value
setMetaData in interface Value
public Object getSQLValue(Select sel,
ExpContext ctx,
ExpState state)
public boolean isSQLValueNull(Select sel,
ExpContext ctx,
ExpState state)
public Object getValue(ExpContext ctx,
ExpState state)
public ExpState initialize(Select sel,
ExpContext ctx,
int flags)
Val
initialize in interface Val
public void calculateValue(Select sel,
ExpContext ctx,
ExpState state,
Val other,
ExpState otherState)
Vallength or any append methods.
calculateValue in interface Valother - the value being compared to, or null if not a comparison
public void select(Select sel,
ExpContext ctx,
ExpState state,
boolean pks)
Val
select in interface Val
public void selectColumns(Select sel,
ExpContext ctx,
ExpState state,
boolean pks)
Val
selectColumns in interface Val
public void groupBy(Select sel,
ExpContext ctx,
ExpState state)
Val
groupBy in interface Val
public void orderBy(Select sel,
ExpContext ctx,
ExpState state,
boolean asc)
Val
orderBy in interface Val
public Object load(ExpContext ctx,
ExpState state,
Result res)
throws SQLException
Val
load in interface ValSQLException
public int length(Select sel,
ExpContext ctx,
ExpState state)
Val
length in interface Val
public void appendIsEmpty(Select sel,
ExpContext ctx,
ExpState state,
SQLBuffer sql)
Val
appendIsEmpty in interface ValappendIsEmpty in class AbstractVal
public void appendIsNotEmpty(Select sel,
ExpContext ctx,
ExpState state,
SQLBuffer sql)
Val
appendIsNotEmpty in interface ValappendIsNotEmpty in class AbstractVal
public void appendSize(Select sel,
ExpContext ctx,
ExpState state,
SQLBuffer sql)
Val
appendSize in interface ValappendSize in class AbstractVal
public void appendIsNull(Select sel,
ExpContext ctx,
ExpState state,
SQLBuffer sql)
Val
appendIsNull in interface ValappendIsNull in class AbstractVal
public void appendIsNotNull(Select sel,
ExpContext ctx,
ExpState state,
SQLBuffer sql)
Val
appendIsNotNull in interface ValappendIsNotNull in class AbstractVal
|
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