Java Visitor类代码示例

import org.apache.flink.util.Visitor; //导入依赖的package包/类
@Override
public void accept(Visitor<OptimizerNode> visitor) {
	if (visitor.preVisit(this)) {
		if (this.input1 == null || this.input2 == null) {
			throw new CompilerException();
		}
		
		getFirstPredecessorNode().accept(visitor);
		getSecondPredecessorNode().accept(visitor);
		
		for (DagConnection connection : getBroadcastConnections()) {
			connection.getSource().accept(visitor);
		}
		
		visitor.postVisit(this);
	}
}
 

import org.apache.flink.util.Visitor; //导入依赖的package包/类
@Override
public void accept(Visitor<OptimizerNode> visitor) {
	if (visitor.preVisit(this)) {
		if (this.input1 == null || this.input2 == null) {
			throw new CompilerException();
		}
		
		getFirstPredecessorNode().accept(visitor);
		getSecondPredecessorNode().accept(visitor);
		
		for (PactConnection connection : getBroadcastConnections()) {
			connection.getSource().accept(visitor);
		}
		
		visitor.postVisit(this);
	}
}
 

import org.apache.flink.util.Visitor; //导入依赖的package包/类
/**
 * Traverses the job depth first from all data sinks on towards the sources.
 * 
 * @see Visitable#accept(Visitor)
 */
@Override
public void accept(Visitor<Operator<?>> visitor) {
	for (GenericDataSinkBase<?> sink : this.sinks) {
		sink.accept(visitor);
	}
}
 

import org.apache.flink.util.Visitor; //导入依赖的package包/类
@Override
public void accept(Visitor<Operator<?>> visitor) {
	boolean descend = visitor.preVisit(this);
	if (descend) {
		this.input1.accept(visitor);
		this.input2.accept(visitor);
		for (Operator<?> c : this.broadcastInputs.values()) {
			c.accept(visitor);
		}
		visitor.postVisit(this);
	}
}
 

import org.apache.flink.util.Visitor; //导入依赖的package包/类
/**
 * Accepts the visitor and applies it this instance. The visitors pre-visit method is called and, if returning 
 * <tt>true</tt>, the visitor is recursively applied on the single input. After the recursion returned,
 * the post-visit method is called.
 * 
 * @param visitor The visitor.
 *  
 * @see org.apache.flink.util.Visitable#accept(org.apache.flink.util.Visitor)
 */
@Override
public void accept(Visitor<Operator<?>> visitor) {
	if (visitor.preVisit(this)) {
		this.input.accept(visitor);
		for (Operator<?> c : this.broadcastInputs.values()) {
			c.accept(visitor);
		}
		visitor.postVisit(this);
	}
}
 

import org.apache.flink.util.Visitor; //导入依赖的package包/类
@Override
public void accept(Visitor<OptimizerNode> visitor) {
	if (visitor.preVisit(this)) {
		if (getPredecessorNode() != null) {
			getPredecessorNode().accept(visitor);
		} else {
			throw new CompilerException();
		}
		visitor.postVisit(this);
	}
}
 

import org.apache.flink.util.Visitor; //导入依赖的package包/类
@Override
public void accept(Visitor<OptimizerNode> visitor) {
	if (visitor.preVisit(this)) {
		if (getPredecessorNode() != null) {
			getPredecessorNode().accept(visitor);
		} else {
			throw new CompilerException();
		}
		for (DagConnection connection : getBroadcastConnections()) {
			connection.getSource().accept(visitor);
		}
		visitor.postVisit(this);
	}
}
 

import org.apache.flink.util.Visitor; //导入依赖的package包/类
@Override
public void accept(Visitor<PlanNode> visitor) {
	if (visitor.preVisit(this)) {
		this.input1.getSource().accept(visitor);
		this.input2.getSource().accept(visitor);
		
		for (Channel broadcastInput : getBroadcastInputs()) {
			broadcastInput.getSource().accept(visitor);
		}
		
		visitor.postVisit(this);
	}
}
 

import org.apache.flink.util.Visitor; //导入依赖的package包/类
@Override
public void acceptForStepFunction(Visitor<PlanNode> visitor) {
	this.rootOfStepFunction.accept(visitor);
	
	if(this.rootOfTerminationCriterion != null) {
		this.rootOfTerminationCriterion.accept(visitor);
	}
}
 

import org.apache.flink.util.Visitor; //导入依赖的package包/类
@Override
public void accept(Visitor<PlanNode> visitor) {
	visitor.preVisit(this);
	for (Channel c : this.inputs) {
		c.getSource().accept(visitor);
	}
	visitor.postVisit(this);
}
 

import org.apache.flink.util.Visitor; //导入依赖的package包/类
@Override
public void accept(Visitor<PlanNode> visitor) {
	if (visitor.preVisit(this)) {
		this.input.getSource().accept(visitor);
		
		for (Channel broadcastInput : getBroadcastInputs()) {
			broadcastInput.getSource().accept(visitor);
		}
		
		visitor.postVisit(this);
	}
}
 

import org.apache.flink.util.Visitor; //导入依赖的package包/类
@Override
public void accept(Visitor<OptimizerNode> visitor) {
	if (visitor.preVisit(this)) {
		if (getPredecessorNode() != null) {
			getPredecessorNode().accept(visitor);
		} else {
			throw new CompilerException();
		}
		for (PactConnection connection : getBroadcastConnections()) {
			connection.getSource().accept(visitor);
		}
		visitor.postVisit(this);
	}
}
 

import org.apache.flink.util.Visitor; //导入依赖的package包/类
@Override
public void accept(Visitor<Operator<?>> visitor) {
	visitor.preVisit(this);
	visitor.postVisit(this);
}
 

import org.apache.flink.util.Visitor; //导入依赖的package包/类
@Override
public void accept(Visitor<OptimizerNode> visitor) {
	if (visitor.preVisit(this)) {
		visitor.postVisit(this);
	}
}
 

import org.apache.flink.util.Visitor; //导入依赖的package包/类
public void acceptForStepFunction(Visitor<OptimizerNode> visitor) {
	this.singleRoot.accept(visitor);
}