Java SqlCall.getOperandList方法代码示例

import org.apache.calcite.sql.SqlCall; //导入方法依赖的package包/类
/** Converts a {@link SqlCall} to a {@link RexCall} with a perhaps different
 * operator. */
private RexNode convertCall(
    SqlRexContext cx,
    SqlCall call,
    SqlOperator op) {
  final List<SqlNode> operands = call.getOperandList();
  final RexBuilder rexBuilder = cx.getRexBuilder();
  final SqlOperandTypeChecker.Consistency consistency =
      op.getOperandTypeChecker() == null
          ? SqlOperandTypeChecker.Consistency.NONE
          : op.getOperandTypeChecker().getConsistency();
  final List<RexNode> exprs =
      convertExpressionList(cx, operands, consistency);
  RelDataType type = rexBuilder.deriveReturnType(op, exprs);
  return rexBuilder.makeCall(type, op, RexUtil.flatten(exprs, op));
}
 

import org.apache.calcite.sql.SqlCall; //导入方法依赖的package包/类
@Override
public RexNode convertCall(SqlRexContext cx, SqlCall call) {
  final RexBuilder rexBuilder = cx.getRexBuilder();
  final List<SqlNode> operands = call.getOperandList();
  final List<RexNode> exprs = new LinkedList<>();

  RelDataTypeFactory typeFactory = cx.getTypeFactory();

  //RelDataType nullableReturnType =

  for (SqlNode node: operands) {
     exprs.add(cx.convertExpression(node));
  }

  // Determine NULL-able using 2nd argument's Null-able.
  RelDataType returnType = typeFactory.createTypeWithNullability(typeFactory.createSqlType(SqlTypeName.BIGINT), exprs.get(1).getType().isNullable());

  return rexBuilder.makeCall(returnType, call.getOperator(), exprs);
}
 

import org.apache.calcite.sql.SqlCall; //导入方法依赖的package包/类
@Override
public RexNode convertCall(SqlRexContext cx, SqlCall call) {
  SqlFlattenOperator operator = (SqlFlattenOperator) call.getOperator();
  final List<RexNode> exprs = new LinkedList<>();

  for (SqlNode node : call.getOperandList()) {
    exprs.add(cx.convertExpression(node));
  }

  SqlFlattenOperator indexedOperator = operator.withIndex(((SqlValidatorImpl)cx.getValidator()).nextFlattenIndex());
  final RexBuilder rexBuilder = cx.getRexBuilder();
  // Since we don't have any way of knowing if the output of the flatten is nullable, we should always assume it is.
  // This is especially important when accelerating a count(column) query, because the normalizer will convert it to
  // a count(1) if it thinks this column is non-nullable, and then remove the flatten altogether. This is actually a
  // problem with the fact that flatten is not really a project operator (because it can output more than one row per input).
  RelDataType type = rexBuilder
    .getTypeFactory()
    .createTypeWithNullability(
      rexBuilder
        .getTypeFactory()
        .createSqlType(SqlTypeName.ANY),
      true
    );
  return rexBuilder.makeCall(type, indexedOperator, exprs);

}
 

import org.apache.calcite.sql.SqlCall; //导入方法依赖的package包/类
@Override
public RexNode convertCall(SqlRexContext cx, SqlCall call) {
  final RexBuilder rexBuilder = cx.getRexBuilder();
  final List<SqlNode> operands = call.getOperandList();
  final List<RexNode> exprs = new LinkedList<>();

  String timeUnit = ((SqlIntervalQualifier) operands.get(0)).timeUnitRange.toString();

  RelDataTypeFactory typeFactory = cx.getTypeFactory();

  //RelDataType nullableReturnType =

  for (SqlNode node: operands) {
     exprs.add(cx.convertExpression(node));
  }

  final RelDataType returnType
      = typeFactory.createTypeWithNullability(typeFactory.createSqlType(SqlTypeName.BIGINT), exprs.get(1).getType().isNullable());
  return rexBuilder.makeCall(returnType, call.getOperator(), exprs);
}
 

import org.apache.calcite.sql.SqlCall; //导入方法依赖的package包/类
private static ASNode extractAS(SqlCall call) {
  if (call.getOperator().getKind() == SqlKind.AS) {
    List<SqlNode> operandList = call.getOperandList();
    if (operandList.size() == 2) {
      SqlNode exp = operandList.get(0);
      SqlNode colID = operandList.get(1);
      if (isSimpleID(colID)) {
        return new ASNode((SqlIdentifier)colID, exp);
      } else {
        throw new UnsupportedOperationException("Unexpected AS " + colID + "\n" + SqlNodes.toTreeString(call));
      }
    } else {
      throw new UnsupportedOperationException("Unexpected AS operands in field: \n" + SqlNodes.toTreeString(call));
    }
  }
  throw new UnsupportedOperationException("AS not understood: " + SqlNodes.toSQLString(call));
}
 

import org.apache.calcite.sql.SqlCall; //导入方法依赖的package包/类
/**
 * Recreates a given RelDataType with nullability iff any of the operands
 * of a call are nullable.
 */
public static RelDataType makeNullableIfOperandsAre(
        final SqlValidator validator,
        final SqlValidatorScope scope,
        final SqlCall call,
        RelDataType type) {
    for (SqlNode operand : call.getOperandList()) {
        RelDataType operandType = validator.deriveType(scope, operand);

        if (containsNullable(operandType)) {
            RelDataTypeFactory typeFactory = validator.getTypeFactory();
            type = typeFactory.createTypeWithNullability(type, true);
            break;
        }
    }
    return type;
}
 

import org.apache.calcite.sql.SqlCall; //导入方法依赖的package包/类
/**
 * Recreates a given RelDataType with nullability iff any of the operands
 * of a call are nullable.
 */
public static RelDataType makeNullableIfOperandsAre(
    final SqlValidator validator,
    final SqlValidatorScope scope,
    final SqlCall call,
    RelDataType type) {
  for (SqlNode operand : call.getOperandList()) {
    RelDataType operandType = validator.deriveType(scope, operand);

    if (containsNullable(operandType)) {
      RelDataTypeFactory typeFactory = validator.getTypeFactory();
      type = typeFactory.createTypeWithNullability(type, true);
      break;
    }
  }
  return type;
}
 

import org.apache.calcite.sql.SqlCall; //导入方法依赖的package包/类
public RexNode convertFunction(
    SqlRexContext cx,
    SqlFunction fun,
    SqlCall call) {
  final List<SqlNode> operands = call.getOperandList();
  final List<RexNode> exprs = convertExpressionList(cx, operands,
      SqlOperandTypeChecker.Consistency.NONE);
  if (fun.getFunctionType() == SqlFunctionCategory.USER_DEFINED_CONSTRUCTOR) {
    return makeConstructorCall(cx, fun, exprs);
  }
  RelDataType returnType =
      cx.getValidator().getValidatedNodeTypeIfKnown(call);
  if (returnType == null) {
    returnType = cx.getRexBuilder().deriveReturnType(fun, exprs);
  }
  return cx.getRexBuilder().makeCall(returnType, fun, exprs);
}
 

import org.apache.calcite.sql.SqlCall; //导入方法依赖的package包/类
public RexNode convertAggregateFunction(
    SqlRexContext cx,
    SqlAggFunction fun,
    SqlCall call) {
  final List<SqlNode> operands = call.getOperandList();
  final List<RexNode> exprs;
  if (call.isCountStar()) {
    exprs = ImmutableList.of();
  } else {
    exprs = convertExpressionList(cx, operands,
        SqlOperandTypeChecker.Consistency.NONE);
  }
  RelDataType returnType =
      cx.getValidator().getValidatedNodeTypeIfKnown(call);
  final int groupCount = cx.getGroupCount();
  if (returnType == null) {
    RexCallBinding binding =
        new RexCallBinding(cx.getTypeFactory(), fun, exprs, ImmutableList.<RelCollation>of()) {
          @Override public int getGroupCount() {
            return groupCount;
          }
        };
    returnType = fun.inferReturnType(binding);
  }
  return cx.getRexBuilder().makeCall(returnType, fun, exprs);
}
 

import org.apache.calcite.sql.SqlCall; //导入方法依赖的package包/类
/**
 * Converts a ROW.
 *
 * <p>Called automatically via reflection.
 */
public RexNode convertRow(
    SqlRexContext cx,
    SqlRowOperator op,
    SqlCall call) {
  if (cx.getValidator().getValidatedNodeType(call).getSqlTypeName()
      != SqlTypeName.COLUMN_LIST) {
    return convertCall(cx, call);
  }
  final RexBuilder rexBuilder = cx.getRexBuilder();
  final List<RexNode> columns = new ArrayList<>();
  for (SqlNode operand : call.getOperandList()) {
    columns.add(
        rexBuilder.makeLiteral(
            ((SqlIdentifier) operand).getSimple()));
  }
  final RelDataType type =
      rexBuilder.deriveReturnType(SqlStdOperatorTable.COLUMN_LIST, columns);
  return rexBuilder.makeCall(type, SqlStdOperatorTable.COLUMN_LIST, columns);
}
 

import org.apache.calcite.sql.SqlCall; //导入方法依赖的package包/类
private void registerSetop(
    SqlValidatorScope parentScope,
    SqlValidatorScope usingScope,
    SqlNode node,
    SqlNode enclosingNode,
    String alias,
    boolean forceNullable) {
  SqlCall call = (SqlCall) node;
  final SetopNamespace setopNamespace =
      createSetopNamespace(call, enclosingNode);
  registerNamespace(usingScope, alias, setopNamespace, forceNullable);

  // A setop is in the same scope as its parent.
  scopes.put(call, parentScope);
  for (SqlNode operand : call.getOperandList()) {
    registerQuery(
        parentScope,
        null,
        operand,
        operand,
        null,
        false);
  }
}
 

import org.apache.calcite.sql.SqlCall; //导入方法依赖的package包/类
@Override public SqlNode visit(SqlCall call) {
  SqlKind kind = call.getKind();
  if (isLogicalNavigation(kind)
      || isAggregation(kind)
      || isRunningOrFinal(kind)) {
    return call;
  }

  switch (kind) {
  case PREV:
    final List<SqlNode> operands = call.getOperandList();
    if (operands.get(0) instanceof SqlIdentifier) {
      String name = ((SqlIdentifier) operands.get(0)).names.get(0);
      return name.equals(alpha) ? call
          : SqlStdOperatorTable.LAST.createCall(SqlParserPos.ZERO, operands);
    }
  }
  return super.visit(call);
}
 

import org.apache.calcite.sql.SqlCall; //导入方法依赖的package包/类
public void validateCall(
    SqlCall call,
    SqlValidator validator,
    SqlValidatorScope scope,
    SqlValidatorScope operandScope) {
  // per the SQL std, each string fragment must be on a different line
  final List<SqlNode> operandList = call.getOperandList();
  for (int i = 1; i < operandList.size(); i++) {
    SqlParserPos prevPos = operandList.get(i - 1).getParserPosition();
    final SqlNode operand = operandList.get(i);
    SqlParserPos pos = operand.getParserPosition();
    if (pos.getLineNum() <= prevPos.getLineNum()) {
      throw validator.newValidationError(operand,
          RESOURCE.stringFragsOnSameLine());
    }
  }
}
 

import org.apache.calcite.sql.SqlCall; //导入方法依赖的package包/类
private static void unparseCube(SqlWriter writer, SqlCall call) {
  writer.keyword(call.getOperator().getName());
  final SqlWriter.Frame frame =
      writer.startList(SqlWriter.FrameTypeEnum.FUN_CALL, "(", ")");
  for (SqlNode operand : call.getOperandList()) {
    writer.sep(",");
    if (operand.getKind() == SqlKind.ROW) {
      final SqlWriter.Frame frame2 =
          writer.startList(SqlWriter.FrameTypeEnum.SIMPLE, "(", ")");
      for (SqlNode operand2 : ((SqlCall) operand).getOperandList()) {
        writer.sep(",");
        operand2.unparse(writer, 0, 0);
      }
      writer.endList(frame2);
    } else if (operand instanceof SqlNodeList
        && ((SqlNodeList) operand).size() == 0) {
      writer.keyword("()");
    } else {
      operand.unparse(writer, 0, 0);
    }
  }
  writer.endList(frame);
}
 

import org.apache.calcite.sql.SqlCall; //导入方法依赖的package包/类
public ComplexExpressionAware(SqlCall call) {
  this.call = call;
  this.update = false;
  final List<SqlNode> operands = call.getOperandList();
  this.clonedOperands = operands.toArray(new SqlNode[operands.size()]);
  rewriteTypes = REWRITE_RULES.get(call.getClass());
}