Java Code Examples for org.apache.calcite.sql.SqlLiteral#sampleValue()

The following examples show how to use org.apache.calcite.sql.SqlLiteral#sampleValue() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: SqlValidatorImpl.java    From Flink-CEPplus with Apache License 2.0 5 votes vote down vote up 
public void validateQuery(SqlNode node, SqlValidatorScope scope,
	RelDataType targetRowType) {
	final SqlValidatorNamespace ns = getNamespace(node, scope);
	if (node.getKind() == SqlKind.TABLESAMPLE) {
		List<SqlNode> operands = ((SqlCall) node).getOperandList();
		SqlSampleSpec sampleSpec = SqlLiteral.sampleValue(operands.get(1));
		if (sampleSpec instanceof SqlSampleSpec.SqlTableSampleSpec) {
			validateFeature(RESOURCE.sQLFeature_T613(), node.getParserPosition());
		} else if (sampleSpec
			instanceof SqlSampleSpec.SqlSubstitutionSampleSpec) {
			validateFeature(RESOURCE.sQLFeatureExt_T613_Substitution(),
				node.getParserPosition());
		}
	}

	validateNamespace(ns, targetRowType);
	switch (node.getKind()) {
		case EXTEND:
			// Until we have a dedicated namespace for EXTEND
			deriveType(scope, node);
	}
	if (node == top) {
		validateModality(node);
	}
	validateAccess(
		node,
		ns.getTable(),
		SqlAccessEnum.SELECT);
}
Example 2
Source File: SqlValidatorImpl.java    From flink with Apache License 2.0 4 votes vote down vote up 
public void validateQuery(SqlNode node, SqlValidatorScope scope,
	RelDataType targetRowType) {
	final SqlValidatorNamespace ns = getNamespace(node, scope);
	if (node.getKind() == SqlKind.TABLESAMPLE) {
		List<SqlNode> operands = ((SqlCall) node).getOperandList();
		SqlSampleSpec sampleSpec = SqlLiteral.sampleValue(operands.get(1));
		if (sampleSpec instanceof SqlSampleSpec.SqlTableSampleSpec) {
			validateFeature(RESOURCE.sQLFeature_T613(), node.getParserPosition());
		} else if (sampleSpec
			instanceof SqlSampleSpec.SqlSubstitutionSampleSpec) {
			validateFeature(RESOURCE.sQLFeatureExt_T613_Substitution(),
				node.getParserPosition());
		}
	}

	validateNamespace(ns, targetRowType);
	switch (node.getKind()) {
		case EXTEND:
			// Until we have a dedicated namespace for EXTEND
			deriveType(scope, node);
	}
	if (node == top) {
		validateModality(node);
	}
	validateAccess(
		node,
		ns.getTable(),
		SqlAccessEnum.SELECT);

	if (node.getKind() == SqlKind.SNAPSHOT) {
		SqlSnapshot snapshot = (SqlSnapshot) node;
		SqlNode period = snapshot.getPeriod();
		RelDataType dataType = deriveType(scope, period);
		if (dataType.getSqlTypeName() != SqlTypeName.TIMESTAMP) {
			throw newValidationError(period,
					Static.RESOURCE.illegalExpressionForTemporal(dataType.getSqlTypeName().getName()));
		}
		if (!ns.getTable().isTemporal()) {
			List<String> qualifiedName = ns.getTable().getQualifiedName();
			String tableName = qualifiedName.get(qualifiedName.size() - 1);
			throw newValidationError(snapshot.getTableRef(),
					Static.RESOURCE.notTemporalTable(tableName));
		}
	}
}