abstract class AbstractVal extends java.lang.Object implements Val
Modifier and Type | Field and Description |
---|---|
protected static java.lang.String |
FALSE |
protected static java.lang.String |
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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AbstractVal() |
Modifier and Type | Method and Description |
---|---|
void |
acceptVisit(ExpressionVisitor visitor)
Accept a visit from a tree visitor.
|
void |
appendIndex(Select sel,
ExpContext ctx,
ExpState state,
SQLBuffer sql)
Append the SQL checking the index of this value.
|
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 |
appendType(Select sel,
ExpContext ctx,
ExpState state,
SQLBuffer sql)
Append the SQL checking the type of this value.
|
java.lang.String |
getAlias()
Return select item alias
|
int |
getId() |
java.lang.String |
getName() |
Path |
getPath() |
Value |
getSelectAs()
Return 'this' concrete class if alias is set, otherwise null
|
boolean |
isAggregate()
Return true if this value is an aggregate.
|
boolean |
isVariable()
Return true if this value is a variable.
|
boolean |
isXPath()
Return true if this value is an XML Path.
|
void |
setAlias(java.lang.String alias)
Set select item alias
|
java.lang.Object |
toDataStoreValue(Select sel,
ExpContext ctx,
ExpState state,
java.lang.Object val)
Return the datastore value of the given object in the context of this
value.
|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
appendTo, calculateValue, groupBy, initialize, length, load, orderBy, select, selectColumns
getMetaData, getType, setImplicitType, setMetaData
protected static final java.lang.String TRUE
protected static final java.lang.String FALSE
public boolean isVariable()
Value
isVariable
in interface Value
public boolean isAggregate()
Value
isAggregate
in interface Value
public boolean isXPath()
Value
public java.lang.Object toDataStoreValue(Select sel, ExpContext ctx, ExpState state, java.lang.Object val)
Val
toDataStoreValue
in interface Val
public void appendIsEmpty(Select sel, ExpContext ctx, ExpState state, SQLBuffer sql)
Val
appendIsEmpty
in interface Val
public void appendIsNotEmpty(Select sel, ExpContext ctx, ExpState state, SQLBuffer sql)
Val
appendIsNotEmpty
in interface Val
public void appendIsNull(Select sel, ExpContext ctx, ExpState state, SQLBuffer sql)
Val
appendIsNull
in interface Val
public void appendIsNotNull(Select sel, ExpContext ctx, ExpState state, SQLBuffer sql)
Val
appendIsNotNull
in interface Val
public void appendIndex(Select sel, ExpContext ctx, ExpState state, SQLBuffer sql)
Val
appendIndex
in interface Val
public void appendType(Select sel, ExpContext ctx, ExpState state, SQLBuffer sql)
Val
appendType
in interface Val
public void appendSize(Select sel, ExpContext ctx, ExpState state, SQLBuffer sql)
Val
appendSize
in interface Val
public void acceptVisit(ExpressionVisitor visitor)
Value
acceptVisit
in interface Value
public java.lang.String getAlias()
Value
public void setAlias(java.lang.String alias)
Value
public Value getSelectAs()
Value
getSelectAs
in interface Val
getSelectAs
in interface Value
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