net.sf.farrago.query
Class FarragoSqlValidator

java.lang.Object
  org.eigenbase.sql.validate.SqlValidatorImpl
      net.sf.farrago.query.FarragoSqlValidator

All Implemented Interfaces:

SqlValidator, SqlValidatorWithHints

Direct Known Subclasses:

LucidDbSqlValidator

public class FarragoSqlValidator
extends SqlValidatorImpl

FarragoSqlValidator refines SqlValidator with some Farrago-specifics.

Version:

$Id: //open/dev/farrago/src/net/sf/farrago/query/FarragoSqlValidator.java#39 $

Author:

John V. Sichi

Nested Class Summary

Nested classes/interfaces inherited from class org.eigenbase.sql.validate.SqlValidatorImpl

SqlValidatorImpl.DmlNamespace, SqlValidatorImpl.FunctionParamInfo, SqlValidatorImpl.IdInfo, SqlValidatorImpl.Status

Nested classes/interfaces inherited from interface org.eigenbase.sql.validate.SqlValidator

SqlValidator.Compatible

Field Summary

(package private) FarragoPreparingStmt

preparingStmt

Fields inherited from class org.eigenbase.sql.validate.SqlValidatorImpl

expandColumnReferences, expandIdentifiers, functionCallStack, idPositions, namespaces, scopes, tracer, typeFactory, unknownType, UPDATE_ANON_PREFIX, UPDATE_SRC_ALIAS, UPDATE_TGT_ALIAS

Constructor Summary

FarragoSqlValidator(FarragoPreparingStmt preparingStmt, SqlConformance conformance)
Constructor that relies on the preparingStmt object to provide various other objects during initialization.

FarragoSqlValidator(SqlOperatorTable opTab, SqlValidatorCatalogReader catalogReader, RelDataTypeFactory typeFactory, SqlConformance conformance, FarragoPreparingStmt preparingStmt)
Constructor that allows caller to specify dependant objects rather than relying on the preparingStmt to supply them.

Method Summary

protected FarragoPreparingStmt	getPreparingStmt()
protected boolean	shouldAllowIntermediateOrderBy()
boolean	shouldExpandIdentifiers() Returns expansion of identifiers.
SqlNode	validate(SqlNode topNode) Validates an expression tree.
void	validateColumnListParams(SqlFunction function, RelDataType[] argTypes, SqlNode[] operands) Validates a COLUMN_LIST parameter
void	validateDataType(SqlDataTypeSpec dataType) Validates a data type expression.
void	validateDelete(SqlDelete call) Validates a DELETE statement.
protected void	validateFeature(org.eigenbase.resgen.ResourceDefinition feature, SqlParserPos context) Validates that a particular feature is enabled.
void	validateInsert(SqlInsert call) Validates an INSERT statement.
void	validateMerge(SqlMerge call) Validates a MERGE statement.
void	validateUpdate(SqlUpdate call) Validates an UPDATE statement.

Methods inherited from class org.eigenbase.sql.validate.SqlValidatorImpl

addToSelectList, checkTypeAssignment, createSelectNamespace, createSetopNamespace, createSourceSelectForDelete, createSourceSelectForUpdate, createTargetRowType, declareCursor, deriveAlias, deriveConstructorType, deriveType, expand, expandOrderExpr, expandStar, getCatalogReader, getConformance, getCursorScope, getFromScope, getGroupScope, getHavingScope, getJoinScope, getLogicalSourceRowType, getLogicalTargetRowType, getNamespace, getOperatorTable, getOrderScope, getOriginal, getOverScope, getParentCursor, getRawSelectScope, getScope, getSelectScope, getSelfJoinExprForUpdate, getTypeFactory, getUnknownType, getValidatedNodeType, getValidatedNodeTypeIfKnown, getWhereScope, getWindowByName, handleUnresolvedFunction, inferUnknownTypes, isAggregate, isAggregate, isSystemField, lookupHints, lookupNameCompletionHints, lookupQualifiedName, newValidationError, performUnconditionalRewrites, popFunctionCall, pushFunctionCall, registerNamespace, removeValidatedNodeType, resolveWindow, setCallRewrite, setColumnReferenceExpansion, setIdentifierExpansion, setOriginal, setValidatedNodeType, shouldAllowOverRelation, validateAggregateParams, validateCall, validateDynamicParam, validateFrom, validateGroupClause, validateHavingClause, validateIdentifier, validateIntervalQualifier, validateJoin, validateLiteral, validateNamespace, validateOrderList, validateOver, validateParameterizedExpression, validateQuery, validateSelect, validateSelectList, validateValues, validateWhereClause, validateWhereOrOn, validateWindow, validateWindowClause

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

preparingStmt

final FarragoPreparingStmt preparingStmt

Constructor Detail

FarragoSqlValidator

public FarragoSqlValidator(SqlOperatorTable opTab,
                           SqlValidatorCatalogReader catalogReader,
                           RelDataTypeFactory typeFactory,
                           SqlConformance conformance,
                           FarragoPreparingStmt preparingStmt)

Constructor that allows caller to specify dependant objects rather than relying on the preparingStmt to supply them. This constructor is is friendlier to class extension as well as providing more control during test setup.

FarragoSqlValidator

public FarragoSqlValidator(FarragoPreparingStmt preparingStmt,
                           SqlConformance conformance)

Constructor that relies on the preparingStmt object to provide various other objects during initialization.

Method Detail

validate

public SqlNode validate(SqlNode topNode)

Description copied from interface: SqlValidator

Validates an expression tree. You can call this method multiple times, but not reentrantly.

Specified by:

validate in interface SqlValidator

Overrides:

validate in class SqlValidatorImpl

Parameters:

topNode - top of expression tree to be validated

Returns:

validated tree (possibly rewritten)

shouldExpandIdentifiers

public boolean shouldExpandIdentifiers()

Description copied from interface: SqlValidator

Returns expansion of identifiers.

Specified by:

shouldExpandIdentifiers in interface SqlValidator

Overrides:

shouldExpandIdentifiers in class SqlValidatorImpl

Returns:

whether this validator should expand identifiers

shouldAllowIntermediateOrderBy

protected boolean shouldAllowIntermediateOrderBy()

Overrides:

shouldAllowIntermediateOrderBy in class SqlValidatorImpl

validateDataType

public void validateDataType(SqlDataTypeSpec dataType)

Description copied from interface: SqlValidator

Validates a data type expression.

Specified by:

validateDataType in interface SqlValidator

Overrides:

validateDataType in class SqlValidatorImpl

Parameters:

dataType - Data type

getPreparingStmt

protected FarragoPreparingStmt getPreparingStmt()

validateInsert

public void validateInsert(SqlInsert call)

Description copied from interface: SqlValidator

Validates an INSERT statement.

Specified by:

validateInsert in interface SqlValidator

Overrides:

validateInsert in class SqlValidatorImpl

Parameters:

call - INSERT statement

validateUpdate

public void validateUpdate(SqlUpdate call)

Description copied from interface: SqlValidator

Validates an UPDATE statement.

Specified by:

validateUpdate in interface SqlValidator

Overrides:

validateUpdate in class SqlValidatorImpl

Parameters:

call - UPDATE statement

validateDelete

public void validateDelete(SqlDelete call)

Description copied from interface: SqlValidator

Validates a DELETE statement.

Specified by:

validateDelete in interface SqlValidator

Overrides:

validateDelete in class SqlValidatorImpl

Parameters:

call - DELETE statement

validateMerge

public void validateMerge(SqlMerge call)

Description copied from interface: SqlValidator

Validates a MERGE statement.

Specified by:

validateMerge in interface SqlValidator

Overrides:

validateMerge in class SqlValidatorImpl

Parameters:

call - MERGE statement

validateFeature

protected void validateFeature(org.eigenbase.resgen.ResourceDefinition feature,
                               SqlParserPos context)

Description copied from class: SqlValidatorImpl

Validates that a particular feature is enabled. By default, all features are enabled; subclasses may override this method to be more discriminating.

Overrides:

validateFeature in class SqlValidatorImpl

Parameters:

feature - feature being used, represented as a resource definition from EigenbaseResource

context - parser position context for error reporting, or null if none available

validateColumnListParams

public void validateColumnListParams(SqlFunction function,
                                     RelDataType[] argTypes,
                                     SqlNode[] operands)

Description copied from interface: SqlValidator

Validates a COLUMN_LIST parameter

Specified by:

validateColumnListParams in interface SqlValidator

Overrides:

validateColumnListParams in class SqlValidatorImpl

Parameters:

function - function containing COLUMN_LIST parameter

argTypes - function arguments

operands - operands passed into the function call