content: /*******************************************************************************
   * Copyright 2017 Bstek
   *
   * Licensed under the Apache License, Version 2.0 (the "License"); you may not
   * use this file except in compliance with the License.  You may obtain a copy
   * of the License at
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
   * License for the specific language governing permissions and limitations under
   * the License.
   ******************************************************************************/
  package com.bstek.ureport.expression.model.condition;
  
  import com.bstek.ureport.build.BindData;
  import com.bstek.ureport.build.Context;
  import com.bstek.ureport.expression.ExpressionUtils;
  import com.bstek.ureport.expression.model.Condition;
  import com.bstek.ureport.expression.model.Op;
  import com.bstek.ureport.expression.model.data.*;
  import com.bstek.ureport.model.Cell;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.logging.Logger;
  
  /**
   * @author
   * @since 2016年11月22日
   */
  public abstract class BaseCondition implements Condition {
  	protected Op op;
  	private String operation;
  	private Join join;
  	private Condition nextCondition;
  	private String left;
  	private String right;
  	protected Logger log=Logger.getAnonymousLogger();
  	@Override
  	public final boolean filter(Cell cell,Cell currentCell,Object obj,Context context) {
  		Object left=computeLeft(cell,currentCell,obj,context);
  		Object right=computeRight(cell,currentCell,obj,context);
  		boolean result=ExpressionUtils.conditionEval(op, left, right);
  		if(join!=null && nextCondition!=null){
  			if(result){
  				if(join.equals(Join.and)){
  					return nextCondition.filter(cell,currentCell,obj,context);
  				}else{
  					return result;
  				}
  			}else{
  				if(join.equals(Join.and)){
  					return result;
  				}else{
  					return nextCondition.filter(cell,currentCell,obj,context);
  				}
  			}
  		}
  		return result;
  	}
  	abstract Object computeLeft(Cell cell,Cell currentCell,Object obj,Context context);
  	abstract Object computeRight(Cell cell,Cell currentCell,Object obj,Context context);
  	public abstract ConditionType getType();
  
  	protected Object extractExpressionData(ExpressionData<?> data){
  		if(data instanceof ObjectExpressionData){
  			return data.getData();
  		}else if(data instanceof ObjectListExpressionData){
  			ObjectListExpressionData listData=(ObjectListExpressionData)data;
  			List<?> list=listData.getData();
  			return list;
  		}else if(data instanceof BindDataListExpressionData){
  			BindDataListExpressionData bindData=(BindDataListExpressionData)data;
  			List<BindData> bindDataList=bindData.getData();
  			List<Object> list=new ArrayList<Object>();
  			for(BindData bd:bindDataList){
  				Object v=bd.getValue();
  				list.add(v);
  			}
  			if(list.size()==1){
  				return list.get(0);
  			}else if(list.size()==0){
  				return null;
  			}
  			return list;
  		}else if(data instanceof NoneExpressionData){
  			return null;
  		}
  		return null;
  	}
  
  	public void setOp(Op op) {
  		this.op = op;
  	}
  	public Op getOp() {
  		return op;
  	}
  	public String getOperation() {
  		return operation;
  	}
  	public void setOperation(String operation) {
  		this.operation = operation;
  	}
  	public void setNextCondition(Condition nextCondition) {
  		this.nextCondition = nextCondition;
  	}
  	public void setJoin(Join join) {
  		this.join = join;
  	}
  	public Join getJoin() {
  		return join;
  	}
  	public String getLeft() {
  		return left;
  	}
  	public void setLeft(String left) {
  		this.left = left;
  	}
  	public String getRight() {
  		return right;
  	}
  	public void setRight(String right) {
  		this.right = right;
  	}
  }
  