org.eigenbase.test
Class SqlValidatorTestCase.TesterImpl

java.lang.Object
  org.eigenbase.test.SqlValidatorTestCase.TesterImpl

All Implemented Interfaces:

SqlTester, SqlValidatorTestCase.Tester

Direct Known Subclasses:

SqlAdvisorTest.AdvisorTestImpl, SqlValidatorFeatureTest.FeatureTesterImpl

Enclosing class:

SqlValidatorTestCase

public static class SqlValidatorTestCase.TesterImpl
extends Object
implements SqlValidatorTestCase.Tester, SqlTester

Implementation of SqlValidatorTestCase.Tester which talks to a mock catalog.

It is also a pure-Java implementation of the SqlTester used by SqlOperatorTests. It can parse and validate queries, but it does not invoke Farrago, so it is very fast but cannot execute functions.

Nested Class Summary

Nested classes/interfaces inherited from interface org.eigenbase.sql.test.SqlTester

SqlTester.TypeChecker, SqlTester.VmName

Field Summary

protected SqlConformance	conformance
protected SqlOperatorTable	opTab

Constructor Summary

SqlValidatorTestCase.TesterImpl(SqlConformance conformance)

Method Summary

void	assertExceptionIsThrown(String sql, String expectedMsgPattern) Checks that a query is valid, or, if invalid, throws the right message at the right location.
private static String	buildQuery(String expression)
void	check(String query, SqlTester.TypeChecker typeChecker, Object result, double delta) Tests that a SQL query returns a single column with the given type.
void	checkAgg(String expr, String[] inputValues, Object result, double delta) Checks that an aggregate expression returns the expected result.
void	checkBoolean(String expression, Boolean result) Tests that a scalar SQL expression returns the expected boolean result.
void	checkCharset(String sql, Charset expectedCharset)
void	checkCollation(String sql, String expectedCollationName, SqlCollation.Coercibility expectedCoercibility)
void	checkColumnType(String sql, String expected) Checks that a query returns one column of an expected type.
void	checkFails(String expression, String expectedError, boolean runtime) Tests that a scalar SQL expression fails at run time.
void	checkIntervalConv(String sql, String expected) Checks if the interval value conversion to milliseconds is valid.
void	checkNull(String expression) Tests that a SQL expression returns the SQL NULL value.
void	checkResultType(String sql, String expected) Checks that a query returns one column of an expected type.
void	checkRewrite(SqlValidator validator, String query, String expectedRewrite) Checks that a query gets rewritten to an expected form.
void	checkScalar(String expression, Object result, String resultType) Tests that a scalar SQL expression returns the expected result and the expected type.
void	checkScalarApprox(String expression, String expectedType, double expectedResult, double delta) Tests that a scalar SQL expression returns expected appoximate numeric result.
void	checkScalarExact(String expression, String result) Tests that a scalar SQL expression returns the expected exact numeric result as an integer.
void	checkScalarExact(String expression, String expectedType, String result) Tests that a scalar SQL expression returns the expected exact numeric result.
void	checkString(String expression, String result, String expectedType) Tests that a scalar SQL expression returns the expected string result.
void	checkType(String expression, String type) Tests that a SQL expression has a given type.
void	checkWinAgg(String expr, String[] inputValues, String windowSpec, String type, Object result, double delta) Checks that a windowed aggregate expression returns the expected result.
protected SqlOperatorTable	createOperatorTable()
RelDataType	getColumnType(String sql) Returns the data type of the sole column of a SQL query.
SqlConformance	getConformance()
SqlMonotonicity	getMonotonicity(String sql) Given a SQL query, returns the monotonicity of the first item in the SELECT clause.
RelDataType	getResultType(String sql) Returns the data type of the row returned by a SQL query.
SqlValidator	getValidator()
SqlNode	parseAndValidate(SqlValidator validator, String sql)
SqlNode	parseQuery(String sql)
void	setFor(SqlOperator operator, SqlTester.VmName... unimplementedVmNames) Declares that this test is for a given operator.

Methods inherited from class java.lang.Object

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

Field Detail

opTab

protected final SqlOperatorTable opTab

conformance

protected final SqlConformance conformance

Constructor Detail

SqlValidatorTestCase.TesterImpl

public SqlValidatorTestCase.TesterImpl(SqlConformance conformance)

Method Detail

getConformance

public SqlConformance getConformance()

Specified by:

getConformance in interface SqlValidatorTestCase.Tester

createOperatorTable

protected SqlOperatorTable createOperatorTable()

getValidator

public SqlValidator getValidator()

Specified by:

getValidator in interface SqlValidatorTestCase.Tester

assertExceptionIsThrown

public void assertExceptionIsThrown(String sql,
                                    String expectedMsgPattern)

Description copied from interface: SqlValidatorTestCase.Tester

Checks that a query is valid, or, if invalid, throws the right message at the right location.

If expectedMsgPattern is null, the query must succeed.

If expectedMsgPattern is not null, the query must fail, and give an error location of (expectedLine, expectedColumn) through (expectedEndLine, expectedEndColumn).

Specified by:

assertExceptionIsThrown in interface SqlValidatorTestCase.Tester

Parameters:

sql - SQL statement

expectedMsgPattern - If this parameter is null the query must be valid for the test to pass; If this parameter is not null the query must be malformed and the message given must match the pattern

getColumnType

public RelDataType getColumnType(String sql)

Description copied from interface: SqlValidatorTestCase.Tester

Returns the data type of the sole column of a SQL query.

For example, getResultType("VALUES (1") returns INTEGER.

Fails if query returns more than one column.

Specified by:

getColumnType in interface SqlValidatorTestCase.Tester

See Also:

SqlValidatorTestCase.Tester.getResultType(String)

getResultType

public RelDataType getResultType(String sql)

Description copied from interface: SqlValidatorTestCase.Tester

Returns the data type of the row returned by a SQL query.

For example, getResultType("VALUES (1, 'foo')") returns RecordType(INTEGER EXPR$0, CHAR(3) EXPR#1).

Specified by:

getResultType in interface SqlValidatorTestCase.Tester

parseAndValidate

public SqlNode parseAndValidate(SqlValidator validator,
                                String sql)

Specified by:

parseAndValidate in interface SqlValidatorTestCase.Tester

parseQuery

public SqlNode parseQuery(String sql)
                   throws SqlParseException

Specified by:

parseQuery in interface SqlValidatorTestCase.Tester

Throws:

SqlParseException

checkColumnType

public void checkColumnType(String sql,
                            String expected)

Description copied from interface: SqlTester

Checks that a query returns one column of an expected type. For example, checkType("VALUES (1 + 2)", "INTEGER NOT NULL").

Specified by:

checkColumnType in interface SqlTester

Specified by:

checkColumnType in interface SqlValidatorTestCase.Tester

Parameters:

sql - Query expression

expected - Type string

checkResultType

public void checkResultType(String sql,
                            String expected)

Description copied from interface: SqlValidatorTestCase.Tester

Checks that a query returns one column of an expected type. For example, checkType("select empno, name from emp""{EMPNO INTEGER NOT NULL, NAME VARCHAR(10) NOT NULL}").

Specified by:

checkResultType in interface SqlValidatorTestCase.Tester

checkIntervalConv

public void checkIntervalConv(String sql,
                              String expected)

Description copied from interface: SqlValidatorTestCase.Tester

Checks if the interval value conversion to milliseconds is valid. For example, checkIntervalConv(VALUES (INTERVAL '1' Minute), "60000").

Specified by:

checkIntervalConv in interface SqlValidatorTestCase.Tester

checkType

public void checkType(String expression,
                      String type)

Description copied from interface: SqlTester

Tests that a SQL expression has a given type. For example,

checkType("SUBSTR('hello' FROM 1 FOR 3)", "VARCHAR(3) NOT NULL");

This method checks length/precision, scale, and whether the type allows NULL values, so is more precise than the type-checking done by methods such as SqlTester.checkScalarExact(java.lang.String, java.lang.String).

Specified by:

checkType in interface SqlTester

Parameters:

expression - Scalar expression

type - Type string

checkCollation

public void checkCollation(String sql,
                           String expectedCollationName,
                           SqlCollation.Coercibility expectedCoercibility)

Specified by:

checkCollation in interface SqlValidatorTestCase.Tester

checkCharset

public void checkCharset(String sql,
                         Charset expectedCharset)

Specified by:

checkCharset in interface SqlValidatorTestCase.Tester

setFor

public void setFor(SqlOperator operator,
                   SqlTester.VmName... unimplementedVmNames)

Description copied from interface: SqlTester

Declares that this test is for a given operator. So we can check that all operators are tested.

Specified by:

setFor in interface SqlTester

Parameters:

operator - Operator

unimplementedVmNames - Names of virtual machines for which this

checkAgg

public void checkAgg(String expr,
                     String[] inputValues,
                     Object result,
                     double delta)

Description copied from interface: SqlTester

Checks that an aggregate expression returns the expected result.

For example, checkAgg("AVG(DISTINCT x)", new String[] {"2", "3", null, "3" }, new Double(2.5), 0);

Specified by:

checkAgg in interface SqlTester

Parameters:

expr - Aggregate expression, e.g. SUM(DISTINCT x)

inputValues - Array of input values, e.g. ["1", null, "2"].

result - Expected result

delta - Allowable variance from expected result

checkWinAgg

public void checkWinAgg(String expr,
                        String[] inputValues,
                        String windowSpec,
                        String type,
                        Object result,
                        double delta)

Description copied from interface: SqlTester

Checks that a windowed aggregate expression returns the expected result.

For example, checkWinAgg("FIRST_VALUE(x)", new String[] {"2", "3", null, "3" }, "INTEGER NOT NULL", 2, 0d);

Specified by:

checkWinAgg in interface SqlTester

Parameters:

expr - Aggregate expression, e.g. SUM(DISTINCT x)

inputValues - Array of input values, e.g. ["1", null, "2"].

type - Expected result type

result - Expected result

delta - Allowable variance from expected result

checkScalar

public void checkScalar(String expression,
                        Object result,
                        String resultType)

Description copied from interface: SqlTester

Tests that a scalar SQL expression returns the expected result and the expected type. For example,

checkScalar("1.1 + 2.9", "4.0", "DECIMAL(2, 1) NOT NULL");

Specified by:

checkScalar in interface SqlTester

Parameters:

expression - Scalar expression

result - Expected result

resultType - Expected result type

checkScalarExact

public void checkScalarExact(String expression,
                             String result)

Description copied from interface: SqlTester

Tests that a scalar SQL expression returns the expected exact numeric result as an integer. For example,

checkScalarExact("1 + 2", "3");

Specified by:

checkScalarExact in interface SqlTester

Parameters:

expression - Scalar expression

result - Expected result

checkScalarExact

public void checkScalarExact(String expression,
                             String expectedType,
                             String result)

Description copied from interface: SqlTester

Tests that a scalar SQL expression returns the expected exact numeric result. For example,

checkScalarExact("1 + 2", "3");

Specified by:

checkScalarExact in interface SqlTester

Parameters:

expression - Scalar expression

expectedType - Type we expect the result to have, including nullability, precision and scale, for example DECIMAL(2, 1) NOT NULL.

result - Expected result

checkScalarApprox

public void checkScalarApprox(String expression,
                              String expectedType,
                              double expectedResult,
                              double delta)

Description copied from interface: SqlTester

Tests that a scalar SQL expression returns expected appoximate numeric result. For example,

checkScalarApprox("1.0 + 2.1", "3.1");

Specified by:

checkScalarApprox in interface SqlTester

Parameters:

expression - Scalar expression

expectedType - Type we expect the result to have, including nullability, precision and scale, for example DECIMAL(2, 1) NOT NULL.

expectedResult - Expected result

delta - Allowed margin of error between expected and actual result

checkBoolean

public void checkBoolean(String expression,
                         Boolean result)

Description copied from interface: SqlTester

Tests that a scalar SQL expression returns the expected boolean result. For example,

checkScalarExact("TRUE AND FALSE", Boolean.TRUE);

The expected result can be null:

checkScalarExact("NOT UNKNOWN", null);

Specified by:

checkBoolean in interface SqlTester

Parameters:

expression - Scalar expression

result - Expected result (null signifies NULL).

checkString

public void checkString(String expression,
                        String result,
                        String expectedType)

Description copied from interface: SqlTester

Tests that a scalar SQL expression returns the expected string result. For example,

checkScalarExact("'ab' || 'c'", "abc");

Specified by:

checkString in interface SqlTester

Parameters:

expression - Scalar expression

result - Expected result

expectedType - Expected result type

checkNull

public void checkNull(String expression)

Description copied from interface: SqlTester

Tests that a SQL expression returns the SQL NULL value. For example,

checkNull("CHAR_LENGTH(CAST(NULL AS VARCHAR(3))");

Specified by:

checkNull in interface SqlTester

Parameters:

expression - Scalar expression

check

public void check(String query,
                  SqlTester.TypeChecker typeChecker,
                  Object result,
                  double delta)

Description copied from interface: SqlTester

Tests that a SQL query returns a single column with the given type. For example,

check("VALUES (1 + 2)", "3", SqlTypeName.Integer);

If result is null, the expression must yield the SQL NULL value. If result is a Pattern, the result must match that pattern.

Specified by:

check in interface SqlTester

Parameters:

query - SQL query

typeChecker - Checks whether the result is the expected type; must not be null

result - Expected result

delta - The acceptable tolerance between the expected and actual

checkRewrite

public void checkRewrite(SqlValidator validator,
                         String query,
                         String expectedRewrite)

Description copied from interface: SqlValidatorTestCase.Tester

Checks that a query gets rewritten to an expected form.

Specified by:

checkRewrite in interface SqlValidatorTestCase.Tester

Parameters:

validator - validator to use; null for default

query - query to test

expectedRewrite - expected SQL text after rewrite and unparse

checkFails

public void checkFails(String expression,
                       String expectedError,
                       boolean runtime)

Description copied from interface: SqlTester

Tests that a scalar SQL expression fails at run time.

Specified by:

checkFails in interface SqlTester

Parameters:

expression - SQL scalar expression

expectedError - Pattern for expected error. If !runtime, must include an error location.

runtime - If true, must fail at runtime; if false, must fail at validate time

getMonotonicity

public SqlMonotonicity getMonotonicity(String sql)

Description copied from interface: SqlValidatorTestCase.Tester

Given a SQL query, returns the monotonicity of the first item in the SELECT clause.

Specified by:

getMonotonicity in interface SqlValidatorTestCase.Tester

Parameters:

sql - SQL query

Returns:

Monotonicity

buildQuery

private static String buildQuery(String expression)