Const.ConstExpState
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
Modifier and Type | Method and Description |
---|---|
void |
acceptVisit(ExpressionVisitor visitor)
Accept a visit from a tree visitor.
|
void |
appendTo(Select sel,
ExpContext ctx,
ExpState state,
SQLBuffer sql,
int index)
Append the
index th 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.
|
void |
get(FieldMetaData field,
boolean nullTraversal)
Traverse into the given field of the current object, and update
the current object to that field value.
|
void |
get(FieldMetaData fmd,
XMLMetaData meta)
Traverse into the given field that maps to xml column, and update
the current object to that field value.
|
void |
get(XMLMetaData meta,
String name)
Traverse into the gevin xpath name of the current object, and update
the current object to that xpath field.
|
String |
getCorrelationVar() |
void |
getKey() |
String |
getSchemaAlias() |
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.
|
XMLMetaData |
getXmlMapping()
Return the current XPath's xmlmapping metadata.
|
ExpState |
initialize(Select sel,
ExpContext ctx,
int flags)
Initialize the value.
|
FieldMetaData |
last()
Return the last field in the path, or null if the path does not
not contain a final field.
|
void |
setImplicitType(Class type)
Set the implicit type of the value, based on how it is used in the
filter.
|
void |
setSchemaAlias(String schemaAlias)
Set the schema alias (the identification variable)
this path is begin with.
|
void |
setSubqueryContext(Context conext,
String correlationVar) |
appendIsEmpty, appendIsNotEmpty, appendIsNotNull, appendIsNull, appendSize, getMetaData, groupBy, isSQLValueNull, length, load, orderBy, select, selectColumns, setMetaData
appendIndex, appendType, getAlias, getId, getName, getPath, getSelectAs, isAggregate, isVariable, isXPath, setAlias, toDataStoreValue
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
appendIndex, appendIsEmpty, appendIsNotEmpty, appendIsNotNull, appendIsNull, appendSize, appendType, getId, getSelectAs, groupBy, length, load, orderBy, select, selectColumns, toDataStoreValue
getAlias, getMetaData, getName, getPath, isAggregate, isVariable, isXPath, setAlias, setMetaData
public ConstPath(Const constant)
public Class getType()
Value
Object
if
the type is unknown.public void setImplicitType(Class type)
Value
Object
from Value.getType()
.setImplicitType
in interface Value
public void get(FieldMetaData field, boolean nullTraversal)
Path
public FieldMetaData last()
Path
public Object getValue(Object[] params)
Constant
public Object getValue(ExpContext ctx, ExpState state)
Const
public Object getSQLValue(Select sel, ExpContext ctx, ExpState state)
Const
getSQLValue
in class Const
public ExpState initialize(Select sel, ExpContext ctx, int flags)
Val
initialize
in interface Val
initialize
in class Const
public void calculateValue(Select sel, ExpContext ctx, ExpState state, Val other, ExpState otherState)
Val
length
or any append
methods.calculateValue
in interface Val
calculateValue
in class Const
other
- the value being compared to, or null if not a comparisonpublic void appendTo(Select sel, ExpContext ctx, ExpState state, SQLBuffer sql, int index)
Val
index
th SQL element to the given buffer.public void acceptVisit(ExpressionVisitor visitor)
Value
acceptVisit
in interface Value
acceptVisit
in class AbstractVal
public void get(FieldMetaData fmd, XMLMetaData meta)
Path
public void get(XMLMetaData meta, String name)
Path
public XMLMetaData getXmlMapping()
Path
getXmlMapping
in interface Path
public void setSchemaAlias(String schemaAlias)
Path
setSchemaAlias
in interface Path
public String getSchemaAlias()
getSchemaAlias
in interface Path
public void setSubqueryContext(Context conext, String correlationVar)
setSubqueryContext
in interface Path
public String getCorrelationVar()
getCorrelationVar
in interface Path
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