本文整理了Java中org.apache.calcite.rex.RexBuilder.makeFieldAccessInternal方法的一些代码示例，展示了RexBuilder.makeFieldAccessInternal的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。RexBuilder.makeFieldAccessInternal方法的具体详情如下：
包路径：org.apache.calcite.rex.RexBuilder
类名称：RexBuilder
方法名：makeFieldAccessInternal

RexBuilder.makeFieldAccessInternal介绍

[英]Creates an expression accessing a given field from a record.
[中]

代码示例

代码示例来源：origin: org.apache.calcite/calcite-core

/**
 * Creates an expression accessing a field with a given ordinal from a
 * record.
 *
 * @param expr Expression yielding a record
 * @param i    Ordinal of field
 * @return Expression accessing given field
 */
public RexNode makeFieldAccess(
  RexNode expr,
  int i) {
 final RelDataType type = expr.getType();
 final List<RelDataTypeField> fields = type.getFieldList();
 if ((i < 0) || (i >= fields.size())) {
  throw new AssertionError("Field ordinal " + i + " is invalid for "
    + " type '" + type + "'");
 }
 return makeFieldAccessInternal(expr, fields.get(i));
}

代码示例来源：origin: Qihoo360/Quicksql

/**
 * Creates an expression accessing a field with a given ordinal from a
 * record.
 *
 * @param expr Expression yielding a record
 * @param i    Ordinal of field
 * @return Expression accessing given field
 */
public RexNode makeFieldAccess(
  RexNode expr,
  int i) {
 final RelDataType type = expr.getType();
 final List<RelDataTypeField> fields = type.getFieldList();
 if ((i < 0) || (i >= fields.size())) {
  throw new AssertionError("Field ordinal " + i + " is invalid for "
    + " type '" + type + "'");
 }
 return makeFieldAccessInternal(expr, fields.get(i));
}

代码示例来源：origin: org.apache.calcite/calcite-core

/**
 * Creates an expression accessing a given named field from a record.
 *
 * <p>NOTE: Be careful choosing the value of {@code caseSensitive}.
 * If the field name was supplied by an end-user (e.g. as a column alias in
 * SQL), use your session's case-sensitivity setting.
 * Only hard-code {@code true} if you are sure that the field name is
 * internally generated.
 * Hard-coding {@code false} is almost certainly wrong.</p>
 *
 * @param expr      Expression yielding a record
 * @param fieldName Name of field in record
 * @param caseSensitive Whether match is case-sensitive
 * @return Expression accessing a given named field
 */
public RexNode makeFieldAccess(RexNode expr, String fieldName,
  boolean caseSensitive) {
 final RelDataType type = expr.getType();
 final RelDataTypeField field =
   type.getField(fieldName, caseSensitive, false);
 if (field == null) {
  throw new AssertionError("Type '" + type + "' has no field '"
    + fieldName + "'");
 }
 return makeFieldAccessInternal(expr, field);
}

代码示例来源：origin: Qihoo360/Quicksql

/**
 * Creates an expression accessing a given named field from a record.
 *
 * <p>NOTE: Be careful choosing the value of {@code caseSensitive}.
 * If the field name was supplied by an end-user (e.g. as a column alias in
 * SQL), use your session's case-sensitivity setting.
 * Only hard-code {@code true} if you are sure that the field name is
 * internally generated.
 * Hard-coding {@code false} is almost certainly wrong.</p>
 *
 * @param expr      Expression yielding a record
 * @param fieldName Name of field in record
 * @param caseSensitive Whether match is case-sensitive
 * @return Expression accessing a given named field
 */
public RexNode makeFieldAccess(RexNode expr, String fieldName,
  boolean caseSensitive) {
 final RelDataType type = expr.getType();
 final RelDataTypeField field =
   type.getField(fieldName, caseSensitive, false);
 if (field == null) {
  throw new AssertionError("Type '" + type + "' has no field '"
    + fieldName + "'");
 }
 return makeFieldAccessInternal(expr, field);
}