import org.projectfloodlight.openflow.protocol.instruction.OFInstructionClearActions; //导入依赖的package包/类
/**
 * Convert the string representation of an OFInstructionClearActions to
 * an OFInstructionClearActions. The instruction will be set within the
 * OFFlowMod.Builder provided. Notice nothing is returned, but the
 * side effect is the addition of an instruction in the OFFlowMod.Builder.
 * @param fmb; The FMB in which to append the new instruction
 * @param instStr; The string to parse the instruction from
 * @param log
 */
public static void clearActionsFromString(OFFlowMod.Builder fmb, String inst, Logger log) {

	if (fmb.getVersion().compareTo(OFVersion.OF_11) < 0) {
		log.error("Clear Actions Instruction not supported in OpenFlow 1.0");
		return;
	}

	if (inst != null && inst.trim().isEmpty()) { /* Allow the empty string, since this is what specifies clear (i.e. key clear does not have any defined values). */
		OFInstructionClearActions i = OFFactories.getFactory(fmb.getVersion()).instructions().clearActions();
		log.debug("Appending ClearActions instruction: {}", i);
		appendInstruction(fmb, i);
		log.debug("All instructions after append: {}", fmb.getInstructions());		
	} else {
		log.error("Got non-empty or null string, but ClearActions should not have any String sub-fields: {}", inst);
	}
}
 

import org.projectfloodlight.openflow.protocol.instruction.OFInstructionClearActions; //导入依赖的package包/类
/**
 * Convert the string representation of an OFInstructionClearActions to
 * an OFInstructionClearActions. The instruction will be set within the
 * OFFlowMod.Builder provided. Notice nothing is returned, but the
 * side effect is the addition of an instruction in the OFFlowMod.Builder.
 * @param fmb; The FMB in which to append the new instruction
 * @param instStr; The string to parse the instruction from
 * @param log
 */
public static void clearActionsFromString(OFFlowMod.Builder fmb, String inst, Logger log) {

	if (fmb.getVersion().compareTo(OFVersion.OF_11) < 0) {
		log.error("Clear Actions Instruction not supported in OpenFlow 1.0");
		return;
	}

	if (inst != null && inst.trim().isEmpty()) { /* Allow the empty string, since this is what specifies clear (i.e. key clear does not have any defined values). */
		OFInstructionClearActions i = OFFactories.getFactory(fmb.getVersion()).instructions().clearActions();
		log.debug("Appending ClearActions instruction: {}", i);
		appendInstruction(fmb, i);
		log.debug("All instructions after append: {}", fmb.getInstructions());
	} else {
		log.error("Got non-empty or null string, but ClearActions should not have any String sub-fields: {}", inst);
	}
}
 

import org.projectfloodlight.openflow.protocol.instruction.OFInstructionClearActions; //导入依赖的package包/类
/**
 * Convert the string representation of an OFInstructionClearActions to
 * an OFInstructionClearActions. The instruction will be set within the
 * OFFlowMod.Builder provided. Notice nothing is returned, but the
 * side effect is the addition of an instruction in the OFFlowMod.Builder.
 * @param fmb; The FMB in which to append the new instruction
 * @param instStr; The string to parse the instruction from
 * @param log
 */
public static void clearActionsFromString(OFFlowMod.Builder fmb, String inst, Logger log) {
	
	if (fmb.getVersion().compareTo(OFVersion.OF_11) < 0) {
		log.error("Clear Actions Instruction not supported in OpenFlow 1.0");
		return;
	}
	
	if (inst != null && inst.isEmpty()) {
		OFInstructionClearActions i = OFFactories.getFactory(fmb.getVersion()).instructions().clearActions();
		log.debug("Appending ClearActions instruction: {}", i);
		appendInstruction(fmb, i);
		log.debug("All instructions after append: {}", fmb.getInstructions());		
	} else {
		log.error("Got non-empty or null string, but ClearActions should not have any String sub-fields: {}", inst);
	}
}
 

import org.projectfloodlight.openflow.protocol.instruction.OFInstructionClearActions; //导入依赖的package包/类
/**
 * Convert an OFInstructionClearActions to string form. The string will be formatted
 * in a dpctl/ofctl-style syntax.
 * @param inst; The instruction to convert to a string
 * @param log
 * @return
 */
public static String clearActionsToString(OFInstructionClearActions inst, Logger log) {
	return ""; // No data for this instruction. The presence of it's key indicates it is to be applied.
}