NonStaticMethodCallNode (Apache Derby V10.14 Internals)

java.lang.Object
- org.apache.derby.impl.sql.compile.QueryTreeNode
- - org.apache.derby.impl.sql.compile.JavaValueNode
  - - org.apache.derby.impl.sql.compile.MethodCallNode
    - - org.apache.derby.impl.sql.compile.NonStaticMethodCallNode

All Implemented Interfaces:

Visitable
```
class NonStaticMethodCallNode
extends MethodCallNode
```
A NonStaticMethodCallNode is really a node to represent a (static or non-static) method call from an object (as opposed to a static method call from a class.

Field Summary

Fields
Modifier and Type Field Description

private boolean isStatic

(package private) JavaValueNode receiver
- Fields inherited from class org.apache.derby.impl.sql.compile.JavaValueNode
  forCallStatement, jsqlType
- Fields inherited from class org.apache.derby.impl.sql.compile.MethodCallNode
  actualMethodReturnType, internalCall, javaClassName, method, methodName, methodParameterTypes, methodParms, routineInfo, signature
- Fields inherited from class org.apache.derby.impl.sql.compile.QueryTreeNode
  AUTOINCREMENT_CREATE_MODIFY, AUTOINCREMENT_CYCLE, AUTOINCREMENT_INC_INDEX, AUTOINCREMENT_IS_AUTOINCREMENT_INDEX, AUTOINCREMENT_START_INDEX

Fields
Modifier and Type	Field	Description
`private boolean`	`isStatic`
`(package private) JavaValueNode`	`receiver`

Constructor Summary

Constructors
Constructor	Description
`NonStaticMethodCallNode(java.lang.String methodName, ValueNode receiver, ContextManager cm)`	Constructor for a NonStaticMethodCallNode

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`(package private) void`	`acceptChildren(Visitor v)`	Accept the visitor for all visitable children of this node.
`(package private) JavaValueNode`	`bindExpression(FromList fromList, SubqueryList subqueryList, java.util.List<AggregateNode> aggregates)`	Bind this expression.
`(package private) boolean`	`categorize(JBitSet referencedTabs, boolean simplePredsOnly)`	Categorize this predicate.
`(package private) void`	`generateExpression(ExpressionClassBuilder acb, MethodBuilder mb)`	Do code generation for this method call
`(package private) boolean`	`generateReceiver(ExpressionClassBuilder acb, MethodBuilder mb)`	Generate the expression that evaluates to the receiver.
`(package private) int`	`getOrderableVariantType()`	Return the variant type for the underlying expression.
`(package private) void`	`preprocess(int numTables, FromList outerFromList, SubqueryList outerSubqueryList, PredicateList outerPredicateList)`	Preprocess an expression tree.
`(package private) void`	`printSubNodes(int depth)`	Prints the sub-nodes of this object.
`(package private) JavaValueNode`	`remapColumnReferencesToExpressions()`	Remap all ColumnReferences in this tree to be clones of the underlying expression.

Methods inherited from class org.apache.derby.impl.sql.compile.JavaValueNode
castToPrimitive, checkReliability, generate, generateReceiver, getCollationType, getConstantValueAsObject, getJavaTypeName, getJSQLType, getPrimitiveTypeName, getReceiverExpression, isPrimitiveType, mapToTypeID, markForCallStatement, markReturnValueDiscarded, mustCastToPrimitive, returnValueDiscarded, returnValueToSQLDomain, setCollationType, setJavaTypeName, valueReturnedToSQLDomain

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from class org.apache.derby.impl.sql.compile.QueryTreeNode
accept, addTag, addUDTUsagePriv, addUDTUsagePriv, bindOffsetFetch, bindRowMultiSet, bindUserCatalogType, bindUserType, checkReliability, checkReliability, convertDefaultNode, copyTagsFrom, createTypeDependency, debugFlush, debugPrint, disablePrivilegeCollection, formatNodeString, generateAuthorizeCheck, getBeginOffset, getClassFactory, getCompilerContext, getContext, getContextManager, getDataDictionary, getDependencyManager, getEndOffset, getExecutionFactory, getGenericConstantActionFactory, getIntProperty, getLanguageConnectionContext, getLongProperty, getNullNode, getOffsetOrderedNodes, getOptimizerFactory, getOptimizerTracer, getParameterTypes, getSchemaDescriptor, getSchemaDescriptor, getStatementType, getTableDescriptor, getTypeCompiler, getUDTDesc, isAtomic, isPrivilegeCollectionRequired, isSessionSchema, isSessionSchema, makeConstantAction, makeTableName, makeTableName, nodeHeader, optimizerTracingIsOn, orReliability, parseSearchCondition, parseStatement, printLabel, referencesSessionSchema, resolveTableToSynonym, setBeginOffset, setEndOffset, setRefActionInfo, stackPrint, taggedWith, treePrint, treePrint, verifyClassExist

- Field Detail
  - receiver
```
JavaValueNode receiver
```
  - isStatic
```
private boolean isStatic
```
- Constructor Detail
  - NonStaticMethodCallNode
```
NonStaticMethodCallNode(java.lang.String methodName,
                        ValueNode receiver,
                        ContextManager cm)
                 throws StandardException
```
    Constructor for a NonStaticMethodCallNode
    
    Parameters:
    
    methodName - The name of the method to call
    
    receiver - A JavaValueNode representing the receiving object
    
    cm - The context manager
    
    Throws:
    
    StandardException - Thrown on error
- Method Detail
  - bindExpression
```
JavaValueNode bindExpression(FromList fromList,
                             SubqueryList subqueryList,
                             java.util.List<AggregateNode> aggregates)
                      throws StandardException
```
    Bind this expression. This means binding the sub-expressions, as well as figuring out what the return type is for this expression.
    
    Specified by:
    
    bindExpression in class JavaValueNode
    
    Parameters:
    
    fromList - The FROM list for the query this expression is in, for binding columns.
    
    subqueryList - The subquery list being built as we find SubqueryNodes
    
    aggregates - The aggregate list being built as we find AggregateNodes
    
    Returns:
    
    this
    
    Throws:
    
    StandardException - Thrown on error
    
    See Also:
    
    ValueNode.bindExpression(org.apache.derby.impl.sql.compile.FromList, org.apache.derby.impl.sql.compile.SubqueryList, java.util.List<org.apache.derby.impl.sql.compile.AggregateNode>)
  - categorize
```
boolean categorize(JBitSet referencedTabs,
                   boolean simplePredsOnly)
            throws StandardException
```
    Categorize this predicate. Initially, this means building a bit map of the referenced tables for each predicate. If the source of this ColumnReference (at the next underlying level) is not a ColumnReference or a VirtualColumnNode then this predicate will not be pushed down. For example, in: select * from (select 1 from s) a (x) where x = 1 we will not push down x = 1. NOTE: It would be easy to handle the case of a constant, but if the inner SELECT returns an arbitrary expression, then we would have to copy that tree into the pushed predicate, and that tree could contain subqueries and method calls. RESOLVE - revisit this issue once we have views.
    
    Overrides:
    
    categorize in class MethodCallNode
    
    Parameters:
    
    referencedTabs - JBitSet with bit map of referenced FromTables
    
    simplePredsOnly - Whether or not to consider method calls, field references and conditional nodes when building bit map
    
    Returns:
    
    boolean Whether or not source.expression is a ColumnReference or a VirtualColumnNode.
    
    Throws:
    
    StandardException - Thrown on error
    
    See Also:
    
    ValueNode.categorize(org.apache.derby.iapi.util.JBitSet, boolean)
  - getOrderableVariantType
```
int getOrderableVariantType()
                     throws StandardException
```
    Return the variant type for the underlying expression. The variant type can be: VARIANT - variant within a scan (non-static field access) SCAN_INVARIANT - invariant within a scan (column references from outer tables) QUERY_INVARIANT - invariant within the life of a query (constant expressions)
    
    Overrides:
    
    getOrderableVariantType in class MethodCallNode
    
    Returns:
    
    The variant type for the underlying expression.
    
    Throws:
    
    StandardException
  - remapColumnReferencesToExpressions
```
JavaValueNode remapColumnReferencesToExpressions()
                                          throws StandardException
```
    Remap all ColumnReferences in this tree to be clones of the underlying expression.
    
    Overrides:
    
    remapColumnReferencesToExpressions in class MethodCallNode
    
    Returns:
    
    JavaValueNode The remapped expression tree.
    
    Throws:
    
    StandardException - Thrown on error
    
    See Also:
    
    ValueNode.remapColumnReferencesToExpressions()
  - printSubNodes
```
void printSubNodes(int depth)
```
    Prints the sub-nodes of this object. See QueryTreeNode.java for how tree printing is supposed to work.
    
    Overrides:
    
    printSubNodes in class MethodCallNode
    
    Parameters:
    
    depth - The depth of this node in the tree
  - preprocess
```
void preprocess(int numTables,
                FromList outerFromList,
                SubqueryList outerSubqueryList,
                PredicateList outerPredicateList)
         throws StandardException
```
    Preprocess an expression tree. We do a number of transformations here (including subqueries, IN lists, LIKE and BETWEEN) plus subquery flattening. NOTE: This is done before the outer ResultSetNode is preprocessed.
    
    Overrides:
    
    preprocess in class MethodCallNode
    
    Parameters:
    
    numTables - Number of tables in the DML Statement
    
    outerFromList - FromList from outer query block
    
    outerSubqueryList - SubqueryList from outer query block
    
    outerPredicateList - PredicateList from outer query block
    
    Throws:
    
    StandardException - Thrown on error
    
    See Also:
    
    ValueNode.preprocess(int, org.apache.derby.impl.sql.compile.FromList, org.apache.derby.impl.sql.compile.SubqueryList, org.apache.derby.impl.sql.compile.PredicateList)
  - generateExpression
```
void generateExpression(ExpressionClassBuilder acb,
                        MethodBuilder mb)
                 throws StandardException
```
    Do code generation for this method call
    
    Specified by:
    
    generateExpression in class JavaValueNode
    
    Parameters:
    
    acb - The ExpressionClassBuilder for the class we're generating
    
    mb - The method the expression will go into
    
    Throws:
    
    StandardException - Thrown on error
  - generateReceiver
```
boolean generateReceiver(ExpressionClassBuilder acb,
                         MethodBuilder mb)
                  throws StandardException
```
    Generate the expression that evaluates to the receiver. This is for the case where a java expression is being returned to the SQL domain, and we need to check whether the receiver is null (if so, the SQL value should be set to null, and this Java expression not evaluated). Instance method calls and field references have receivers, while class method calls and calls to constructors do not. If this Java expression does not have a receiver, this method returns null. Only generate the receiver once and cache it in a field. This is because there will be two references to the receiver, and we want to evaluate it only once.
    
    Overrides:
    
    generateReceiver in class JavaValueNode
    
    Parameters:
    
    acb - The ExpressionClassBuilder for the class being built
    
    mb - The method the expression will go into
    
    Returns:
    
    true if compiled receiver, false otherwise.
    
    Throws:
    
    StandardException - Thrown on error
  - acceptChildren
```
void acceptChildren(Visitor v)
             throws StandardException
```
    Accept the visitor for all visitable children of this node.
    
    Overrides:
    
    acceptChildren in class MethodCallNode
    
    Parameters:
    
    v - the visitor
    
    Throws:
    
    StandardException - on error

Class NonStaticMethodCallNode

Field Summary

Fields inherited from class org.apache.derby.impl.sql.compile.JavaValueNode

Fields inherited from class org.apache.derby.impl.sql.compile.MethodCallNode

Fields inherited from class org.apache.derby.impl.sql.compile.QueryTreeNode

Constructor Summary

Method Summary

Methods inherited from class org.apache.derby.impl.sql.compile.JavaValueNode

Methods inherited from class org.apache.derby.impl.sql.compile.MethodCallNode

Methods inherited from class java.lang.Object

Methods inherited from class org.apache.derby.impl.sql.compile.QueryTreeNode

Field Detail

receiver

isStatic

Constructor Detail

NonStaticMethodCallNode

Method Detail

bindExpression

categorize

getOrderableVariantType

remapColumnReferencesToExpressions

printSubNodes

preprocess

generateExpression

generateReceiver

acceptChildren