abstract class Const extends AbstractVal implements Constant
Modifier and Type | Class and Description |
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protected static class |
Const.ConstExpState
Constant expression state.
|
FALSE, TRUE
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 and Description |
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Const() |
Modifier and Type | Method and Description |
---|---|
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.
|
acceptVisit, appendIndex, appendType, getAlias, getId, getName, getPath, getSelectAs, isAggregate, isVariable, isXPath, setAlias, toDataStoreValue
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
getType, setImplicitType
public ClassMetaData getMetaData()
Value
getMetaData
in interface Value
public 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)
Val
length
or any append
methods.calculateValue
in interface Val
other
- the value being compared to, or null if not a comparisonpublic void select(Select sel, ExpContext ctx, ExpState state, boolean pks)
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
public void orderBy(Select sel, ExpContext ctx, ExpState state, boolean asc)
Val
public Object load(ExpContext ctx, ExpState state, Result res) throws SQLException
Val
load
in interface Val
SQLException
public int length(Select sel, ExpContext ctx, ExpState state)
Val
public void appendIsEmpty(Select sel, ExpContext ctx, ExpState state, SQLBuffer sql)
Val
appendIsEmpty
in interface Val
appendIsEmpty
in class AbstractVal
public void appendIsNotEmpty(Select sel, ExpContext ctx, ExpState state, SQLBuffer sql)
Val
appendIsNotEmpty
in interface Val
appendIsNotEmpty
in class AbstractVal
public void appendSize(Select sel, ExpContext ctx, ExpState state, SQLBuffer sql)
Val
appendSize
in interface Val
appendSize
in class AbstractVal
public void appendIsNull(Select sel, ExpContext ctx, ExpState state, SQLBuffer sql)
Val
appendIsNull
in interface Val
appendIsNull
in class AbstractVal
public void appendIsNotNull(Select sel, ExpContext ctx, ExpState state, SQLBuffer sql)
Val
appendIsNotNull
in interface Val
appendIsNotNull
in class AbstractVal
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