| java.lang.Object
 org.apache.derby.impl.sql.compile.QueryTreeNode
org.apache.derby.impl.sql.compile.ValueNode
org.apache.derby.impl.sql.compile.ConstantNode
All known Subclasses: org.apache.derby.impl.sql.compile.SQLBooleanConstantNode, org.apache.derby.impl.sql.compile.BitConstantNode, org.apache.derby.impl.sql.compile.NumericConstantNode, org.apache.derby.impl.sql.compile.UntypedNullConstantNode, org.apache.derby.impl.sql.compile.XMLConstantNode, org.apache.derby.impl.sql.compile.LOBConstantNode, org.apache.derby.impl.sql.compile.BooleanConstantNode, org.apache.derby.impl.sql.compile.CharConstantNode, org.apache.derby.impl.sql.compile.UserTypeConstantNode,
| ConstantNode | | abstract class ConstantNode extends ValueNode (Code) | | ConstantNode holds literal constants as well as nulls.
A NULL from the parser may not yet know its type; that
must be set during binding, as it is for parameters.
the DataValueDescriptor methods want to throw exceptions
when they are of the wrong type, but to do that they
must check typeId when the value is null, rather than
the instanceof check they do for returning a valid value.
For code generation, we generate a static field. Then we set the
field be the proper constant expression (something like
getDatavalueFactory().getCharDataValue("hello", ...)) )
in the constructor of the generated method. Ideally
we would have just
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| ConstantNode | | ConstantNode()(Code) | | Constructor for untyped nodes, which contain little information
|
| bindExpression | | public ValueNode bindExpression(FromList fromList, SubqueryList subqueryList, Vector aggregateVector)(Code) | | Bind this expression. This means binding the sub-expressions,
as well as figuring out what the return type is for this expression.
In this case, there are no sub-expressions, and the return type
is already known, so this is just a stub.
Parameters:
fromList - The FROM list for the query thisexpression is in, for binding columns.
Parameters:
subqueryList - The subquery list being built as we find SubqueryNodes
Parameters:
aggregateVector - The aggregate vector being built as we find AggregateNodes The new top of the expression tree. |
| generateConstant | | abstract void generateConstant(ExpressionClassBuilder acb, MethodBuilder mb) throws StandardException(Code) | | This generates the proper constant. It is implemented
by every specific constant node (e.g. IntConstantNode).
Parameters:
acb - The ExpressionClassBuilder for the class being built
Parameters:
mb - The method the code to place the code
exception:
StandardException - Thrown on error |
| generateExpression | | public void generateExpression(ExpressionClassBuilder acb, MethodBuilder mb) throws StandardException(Code) | | For a ConstantNode, we generate the equivalent literal value.
A null is generated as a Null value cast to the type of
the constant node.
The subtypes of ConstantNode generate literal expressions
for non-null values.
Parameters:
acb - The ExpressionClassBuilder for the class being built
Parameters:
mb - The method the code to place the code
exception:
StandardException - Thrown on error |
| getClone | | public ValueNode getClone()(Code) | | Return a clone of this node.
ValueNode A clone of this node. |
| getOrderableVariantType | | protected int getOrderableVariantType()(Code) | | Return the variant type for the underlying expression.
The variant type can be:
VARIANT - variant within a scan
(method calls and non-static field access)
SCAN_INVARIANT - invariant within a scan
(column references from outer tables)
QUERY_INVARIANT - invariant within the life of a query
VARIANT - immutable
The variant type for the underlying expression. |
| init | | public void init(Object typeId, Object nullable, Object maximumWidth) throws StandardException(Code) | | Initializer for non-numeric types
Parameters:
typeId - The Type ID of the datatype
Parameters:
nullable - True means the constant is nullable
Parameters:
maximumWidth - The maximum number of bytes in the data value
exception:
StandardException - |
| isCloneable | | public boolean isCloneable()(Code) | | Return whether or not this expression tree is cloneable.
boolean Whether or not this expression tree is cloneable. |
| isConstantExpression | | public boolean isConstantExpression()(Code) | | Return whether or not this expression tree represents a constant expression.
Whether or not this expression tree represents a constant expression. |
| isNull | | public boolean isNull()(Code) | | Return whether or not this node represents a typed null constant.
|
| toString | | public String toString()(Code) | | Convert this object to a String. See comments in QueryTreeNode.java
for how this should be done for tree printing.
This object as a String |
| Methods inherited from org.apache.derby.impl.sql.compile.ValueNode | public ValueNode bindExpression(FromList fromList, SubqueryList subqueryList, Vector aggregateVector) throws StandardException(Code)(Java Doc)
public ValueNode bindExpression(FromList fromList, SubqueryList subqueryList, Vector aggregateVector, boolean forQueryRewrite) throws StandardException(Code)(Java Doc)
public boolean categorize(JBitSet referencedTabs, boolean simplePredsOnly) throws StandardException(Code)(Java Doc)
public ValueNode changeToCNF(boolean underTopAndNode) throws StandardException(Code)(Java Doc)
public ValueNode checkIsBoolean() throws StandardException(Code)(Java Doc)
public void checkReliability(String fragmentType, int fragmentBitMask) throws StandardException(Code)(Java Doc)
public void checkReliability(int fragmentBitMask, String fragmentType) throws StandardException(Code)(Java Doc)
void checkTopPredicatesForEqualsConditions(int tableNumber, boolean[] eqOuterCols, int[] tableNumbers, JBitSet[] tableColMap, boolean resultColTable) throws StandardException(Code)(Java Doc)
public boolean constantExpression(PredicateList whereClause)(Code)(Java Doc)
public void copyFields(ValueNode oldVN) throws StandardException(Code)(Java Doc)
ValueNode eliminateNots(boolean underNotNode) throws StandardException(Code)(Java Doc)
public ValueNode genEqualsFalseTree() throws StandardException(Code)(Java Doc)
public ValueNode genIsNullTree() throws StandardException(Code)(Java Doc)
public ValueNode genSQLJavaSQLTree() throws StandardException(Code)(Java Doc)
final protected void generate(ActivationClassBuilder acb, MethodBuilder mb) throws StandardException(Code)(Java Doc)
public void generateExpression(ExpressionClassBuilder acb, MethodBuilder mb) throws StandardException(Code)(Java Doc)
public void generateFilter(ExpressionClassBuilder ecb, MethodBuilder mb) throws StandardException(Code)(Java Doc)
public int getClause()(Code)(Java Doc)
public ValueNode getClone() throws StandardException(Code)(Java Doc)
public String getColumnName()(Code)(Java Doc)
Object getConstantValueAsObject() throws StandardException(Code)(Java Doc)
final protected DataValueFactory getDataValueFactory()(Code)(Java Doc)
protected int getOrderableVariantType() throws StandardException(Code)(Java Doc)
public String getSchemaName() throws StandardException(Code)(Java Doc)
public ResultColumn getSourceResultColumn()(Code)(Java Doc)
public String getTableName()(Code)(Java Doc)
JBitSet getTablesReferenced() throws StandardException(Code)(Java Doc)
boolean getTransformed()(Code)(Java Doc)
public TypeCompiler getTypeCompiler() throws StandardException(Code)(Java Doc)
public TypeId getTypeId() throws StandardException(Code)(Java Doc)
public DataTypeDescriptor getTypeServices() throws StandardException(Code)(Java Doc)
public void init(Object typeId, Object precision, Object scale, Object isNullable, Object maximumWidth) throws StandardException(Code)(Java Doc)
public boolean isBinaryEqualsOperatorNode()(Code)(Java Doc)
boolean isBooleanFalse()(Code)(Java Doc)
boolean isBooleanTrue()(Code)(Java Doc)
public boolean isCloneable()(Code)(Java Doc)
public boolean isConstantExpression()(Code)(Java Doc)
abstract protected boolean isEquivalent(ValueNode other) throws StandardException(Code)(Java Doc)
public boolean isParameterNode()(Code)(Java Doc)
public boolean isRelationalOperator()(Code)(Java Doc)
final protected boolean isSameNodeType(ValueNode other)(Code)(Java Doc)
public boolean optimizableEqualityNode(Optimizable optTable, int columnNumber, boolean isNullOkay) throws StandardException(Code)(Java Doc)
public ValueNode preprocess(int numTables, FromList outerFromList, SubqueryList outerSubqueryList, PredicateList outerPredicateList) throws StandardException(Code)(Java Doc)
public ValueNode putAndsOnTop() throws StandardException(Code)(Java Doc)
public ValueNode remapColumnReferencesToExpressions() throws StandardException(Code)(Java Doc)
public boolean requiresTypeFromContext()(Code)(Java Doc)
public double selectivity(Optimizable optTable) throws StandardException(Code)(Java Doc)
public void setClause(int clause)(Code)(Java Doc)
void setTransformed()(Code)(Java Doc)
public void setType(DataTypeDescriptor dataTypeServices) throws StandardException(Code)(Java Doc)
public String toString()(Code)(Java Doc)
public boolean updatableByCursor()(Code)(Java Doc)
public boolean verifyChangeToCNF()(Code)(Java Doc)
boolean verifyEliminateNots()(Code)(Java Doc)
public boolean verifyPutAndsOnTop()(Code)(Java Doc)
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| Methods inherited from org.apache.derby.impl.sql.compile.QueryTreeNode | public Visitable accept(Visitor v) throws StandardException(Code)(Java Doc)
public QueryTreeNode bind() throws StandardException(Code)(Java Doc)
public DataValueDescriptor convertDefaultNode(DataTypeDescriptor typeDescriptor) throws StandardException(Code)(Java Doc)
protected static void debugFlush()(Code)(Java Doc)
public static void debugPrint(String outputString)(Code)(Java Doc)
public void disablePrivilegeCollection()(Code)(Java Doc)
public String executeSchemaName()(Code)(Java Doc)
public String executeStatementName()(Code)(Java Doc)
public static String formatNodeString(String nodeString, int depth)(Code)(Java Doc)
public boolean foundString(String[] list, String search)(Code)(Java Doc)
public GeneratedClass generate(ByteArray ignored) throws StandardException(Code)(Java Doc)
protected void generate(ActivationClassBuilder acb, MethodBuilder mb) throws StandardException(Code)(Java Doc)
void generateAuthorizeCheck(ActivationClassBuilder acb, MethodBuilder mb, int sqlOperation)(Code)(Java Doc)
public int getBeginOffset()(Code)(Java Doc)
final protected ClassFactory getClassFactory()(Code)(Java Doc)
final protected CompilerContext getCompilerContext()(Code)(Java Doc)
final public ContextManager getContextManager()(Code)(Java Doc)
public Object getCursorInfo() throws StandardException(Code)(Java Doc)
final public DataDictionary getDataDictionary()(Code)(Java Doc)
final public DependencyManager getDependencyManager()(Code)(Java Doc)
public int getEndOffset()(Code)(Java Doc)
final public ExecutionFactory getExecutionFactory()(Code)(Java Doc)
final public GenericConstantActionFactory getGenericConstantActionFactory()(Code)(Java Doc)
protected int getIntProperty(String value, String key) throws StandardException(Code)(Java Doc)
final protected LanguageConnectionContext getLanguageConnectionContext()(Code)(Java Doc)
final public NodeFactory getNodeFactory()(Code)(Java Doc)
protected int getNodeType()(Code)(Java Doc)
public ConstantNode getNullNode(TypeId typeId, ContextManager cm) throws StandardException(Code)(Java Doc)
public DataTypeDescriptor[] getParameterTypes() throws StandardException(Code)(Java Doc)
public long getRowEstimate()(Code)(Java Doc)
public String getSPSName()(Code)(Java Doc)
final SchemaDescriptor getSchemaDescriptor(String schemaName) throws StandardException(Code)(Java Doc)
final SchemaDescriptor getSchemaDescriptor(String schemaName, boolean raiseError) throws StandardException(Code)(Java Doc)
protected int getStatementType()(Code)(Java Doc)
final protected TableDescriptor getTableDescriptor(String tableName, SchemaDescriptor schema) throws StandardException(Code)(Java Doc)
final protected TypeCompiler getTypeCompiler(TypeId typeId)(Code)(Java Doc)
public void init(Object arg1) throws StandardException(Code)(Java Doc)
public void init(Object arg1, Object arg2) throws StandardException(Code)(Java Doc)
public void init(Object arg1, Object arg2, Object arg3) throws StandardException(Code)(Java Doc)
public void init(Object arg1, Object arg2, Object arg3, Object arg4) throws StandardException(Code)(Java Doc)
public void init(Object arg1, Object arg2, Object arg3, Object arg4, Object arg5) throws StandardException(Code)(Java Doc)
public void init(Object arg1, Object arg2, Object arg3, Object arg4, Object arg5, Object arg6) throws StandardException(Code)(Java Doc)
public void init(Object arg1, Object arg2, Object arg3, Object arg4, Object arg5, Object arg6, Object arg7) throws StandardException(Code)(Java Doc)
public void init(Object arg1, Object arg2, Object arg3, Object arg4, Object arg5, Object arg6, Object arg7, Object arg8) throws StandardException(Code)(Java Doc)
public void init(Object arg1, Object arg2, Object arg3, Object arg4, Object arg5, Object arg6, Object arg7, Object arg8, Object arg9) throws StandardException(Code)(Java Doc)
public void init(Object arg1, Object arg2, Object arg3, Object arg4, Object arg5, Object arg6, Object arg7, Object arg8, Object arg9, Object arg10) throws StandardException(Code)(Java Doc)
public void init(Object arg1, Object arg2, Object arg3, Object arg4, Object arg5, Object arg6, Object arg7, Object arg8, Object arg9, Object arg10, Object arg11) throws StandardException(Code)(Java Doc)
public void init(Object arg1, Object arg2, Object arg3, Object arg4, Object arg5, Object arg6, Object arg7, Object arg8, Object arg9, Object arg10, Object arg11, Object arg12) throws StandardException(Code)(Java Doc)
public void init(Object arg1, Object arg2, Object arg3, Object arg4, Object arg5, Object arg6, Object arg7, Object arg8, Object arg9, Object arg10, Object arg11, Object arg12, Object arg13) throws StandardException(Code)(Java Doc)
public void init(Object arg1, Object arg2, Object arg3, Object arg4, Object arg5, Object arg6, Object arg7, Object arg8, Object arg9, Object arg10, Object arg11, Object arg12, Object arg13, Object arg14) throws StandardException(Code)(Java Doc)
public boolean isAtomic() throws StandardException(Code)(Java Doc)
protected boolean isInstanceOf(int nodeType)(Code)(Java Doc)
public boolean isPrivilegeCollectionRequired()(Code)(Java Doc)
final boolean isSessionSchema(SchemaDescriptor sd)(Code)(Java Doc)
final boolean isSessionSchema(String schemaName)(Code)(Java Doc)
public ConstantAction makeConstantAction() throws StandardException(Code)(Java Doc)
public ResultDescription makeResultDescription() throws StandardException(Code)(Java Doc)
public TableName makeTableName(String schemaName, String flatName) throws StandardException(Code)(Java Doc)
public boolean needsSavepoint()(Code)(Java Doc)
protected String nodeHeader()(Code)(Java Doc)
public QueryTreeNode optimize() throws StandardException(Code)(Java Doc)
public static QueryTreeNode parseQueryText(CompilerContext compilerContext, String queryText, Object[] paramDefaults, LanguageConnectionContext lcc) throws StandardException(Code)(Java Doc)
public void printLabel(int depth, String label)(Code)(Java Doc)
public void printSubNodes(int depth)(Code)(Java Doc)
public boolean referencesSessionSchema() throws StandardException(Code)(Java Doc)
public TableName resolveTableToSynonym(TableName tabName) throws StandardException(Code)(Java Doc)
public void setBeginOffset(int beginOffset)(Code)(Java Doc)
public void setContextManager(ContextManager cm)(Code)(Java Doc)
public void setEndOffset(int endOffset)(Code)(Java Doc)
public void setNodeType(int nodeType)(Code)(Java Doc)
public void setRefActionInfo(long fkIndexConglomId, int[] fkColArray, String parentResultSetId, boolean dependentScan)(Code)(Java Doc)
public String toString()(Code)(Java Doc)
public void treePrint()(Code)(Java Doc)
public void treePrint(int depth)(Code)(Java Doc)
String verifyClassExist(String javaClassName, boolean convertCase) throws StandardException(Code)(Java Doc)
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