本文整理了Java中org.apache.calcite.rel.RelNode.isValid方法的一些代码示例，展示了RelNode.isValid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。RelNode.isValid方法的具体详情如下：
包路径：org.apache.calcite.rel.RelNode
类名称：RelNode
方法名：isValid

RelNode.isValid介绍

[英]Returns whether this relational expression is valid.

If assertions are enabled, this method is typically called with litmus = THROW, as follows:

assert rel.isValid(Litmus.THROW)

This signals that the method can throw an AssertionError if it is not valid.
[中]返回此关系表达式是否有效。
如果启用了断言，则通常使用litmus=THROW调用此方法，如下所示：

assert rel.isValid(Litmus.THROW)

这表明如果断言错误无效，该方法可以抛出断言错误。

代码示例

代码示例来源：origin: Qihoo360/Quicksql

public void visit(RelNode node, int ordinal, RelNode parent) {
  try {
   stack.push(node);
   if (!node.isValid(Litmus.THROW, this)) {
    ++invalidCount;
   }
   super.visit(node, ordinal, parent);
  } finally {
   stack.pop();
  }
 }
}

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

public void visit(RelNode node, int ordinal, RelNode parent) {
  try {
   stack.push(node);
   if (!node.isValid(Litmus.THROW, this)) {
    ++invalidCount;
   }
   super.visit(node, ordinal, parent);
  } finally {
   stack.pop();
  }
 }
}

代码示例来源：origin: Qihoo360/Quicksql

public RelNode onRegister(RelOptPlanner planner) {
 List<RelNode> oldInputs = getInputs();
 List<RelNode> inputs = new ArrayList<>(oldInputs.size());
 for (final RelNode input : oldInputs) {
  RelNode e = planner.ensureRegistered(input, null);
  if (e != input) {
   // TODO: change 'equal' to 'eq', which is stronger.
   assert RelOptUtil.equal(
     "rowtype of rel before registration",
     input.getRowType(),
     "rowtype of rel after registration",
     e.getRowType(),
     Litmus.THROW);
  }
  inputs.add(e);
 }
 RelNode r = this;
 if (!Util.equalShallow(oldInputs, inputs)) {
  r = copy(getTraitSet(), inputs);
 }
 r.recomputeDigest();
 assert r.isValid(Litmus.THROW, null);
 return r;
}

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

public RelNode onRegister(RelOptPlanner planner) {
 List<RelNode> oldInputs = getInputs();
 List<RelNode> inputs = new ArrayList<>(oldInputs.size());
 for (final RelNode input : oldInputs) {
  RelNode e = planner.ensureRegistered(input, null);
  if (e != input) {
   // TODO: change 'equal' to 'eq', which is stronger.
   assert RelOptUtil.equal(
     "rowtype of rel before registration",
     input.getRowType(),
     "rowtype of rel after registration",
     e.getRowType(),
     Litmus.THROW);
  }
  inputs.add(e);
 }
 RelNode r = this;
 if (!Util.equalShallow(oldInputs, inputs)) {
  r = copy(getTraitSet(), inputs);
 }
 r.recomputeDigest();
 assert r.isValid(Litmus.THROW, null);
 return r;
}