Package io.deephaven.server.table.validation

Class ParsingColumnExpressionValidator

java.lang.Object

io.deephaven.server.table.validation.ParsingColumnExpressionValidator

All Implemented Interfaces:

ColumnExpressionValidator

public class ParsingColumnExpressionValidator
extends Object
implements ColumnExpressionValidator

Validates a column expression coming from gRPC, to ensure that the included code will use the customer defined list of allowed methods.

The formula is compiled as part of this validation, and the QueryLanguageParser produces a list of the methods that the formula would invoke if executed. The set of used methods is compared against our allowlist.

This validator is stricter than the MethodNameColumnExpressionValidator, which does not take the class instances into account.

The ExpressionValidatorModule.getParsingColumnExpressionValidatorFromConfiguration(Configuration) method is used to create a validator based on configuration properties.

Constructor Summary

Constructors

Constructor	Description
ParsingColumnExpressionValidator(Collection<MethodInvocationValidator> methodInvocationValidators)	The collection of method validators to check each invocation against.

Method Summary

Modifier and Type	Method	Description
void	validateColumnExpressions(SelectColumn[] selectColumns, String[] originalExpressions, Table table)
void	validateConditionFilters(List<ConditionFilter> conditionFilters, Table table)
WhereFilter[]	validateSelectFilters(String[] conditionalExpressions, Table table)

Methods inherited from class java.lang.Object

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

Constructor Details

ParsingColumnExpressionValidator

public ParsingColumnExpressionValidator(Collection<MethodInvocationValidator> methodInvocationValidators)

The collection of method validators to check each invocation against. At least one validator must return true for the method to be permitted. If any validator returns false, then the

Parameters:

methodInvocationValidators - the collection of method validators to use

Method Details

validateSelectFilters

public WhereFilter[] validateSelectFilters(String[] conditionalExpressions,
 Table table)

Specified by:

validateSelectFilters in interface ColumnExpressionValidator

validateConditionFilters

public void validateConditionFilters(List<ConditionFilter> conditionFilters,
 Table table)

Specified by:

validateConditionFilters in interface ColumnExpressionValidator

validateColumnExpressions

public void validateColumnExpressions(SelectColumn[] selectColumns,
 String[] originalExpressions,
 Table table)

Specified by:

validateColumnExpressions in interface ColumnExpressionValidator