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    • querymethods.util.WhereBuilder Maven / Gradle / Ivy

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    package querymethods.util;

import java.util.Queue;

import querymethods.springdata.mapping.PropertyPath;
import querymethods.springdata.query.parser.Part;
import querymethods.springdata.query.parser.Part.Type;
import tk.mybatis.mapper.entity.Example.Criteria;

/**
 * where条件构建类 参考spring data PredicateBuilder
 * 
 * @author OYGD
 *
 */
public class WhereBuilder {

  /**
   * 拼装where条件，参考spring data PredicateBuilder
   * 
   * @return
   */
  public static Criteria build(Part part, Criteria root, Queue args) {

    PropertyPath property = part.getProperty();
    Type type = part.getType();
    String segment = property.getSegment();
    switch (type) {
      case BETWEEN:
        return root.andBetween(segment, args.poll(), args.poll());
      case AFTER:
      case GREATER_THAN:
        return root.andGreaterThan(segment, args.poll());
      case GREATER_THAN_EQUAL:
        return root.andGreaterThanOrEqualTo(segment, args.poll());
      case BEFORE:
      case LESS_THAN:
        return root.andLessThan(segment, args.poll());
      case LESS_THAN_EQUAL:
        return root.andLessThanOrEqualTo(segment, args.poll());
      case IS_NULL:
        return root.andIsNull(segment);
      case IS_NOT_NULL:
        return root.andIsNotNull(segment);
      case NOT_IN:
        return root.andNotIn(segment, (Iterable) args.poll());
      case IN:
        return root.andIn(segment, (Iterable) args.poll());
      case STARTING_WITH:
        return root.andLike(segment, "%" + args.poll().toString());
      case ENDING_WITH:
        return root.andLike(segment, args.poll().toString() + "%");
      case CONTAINING:
        return root.andLike(segment, "%" + args.poll().toString() + "%");
      case NOT_CONTAINING:
        return root.andNotIn(segment, (Iterable) args.poll());
      case LIKE:
        return root.andLike(segment, args.poll().toString());
      case NOT_LIKE:
        return root.andNotLike(segment, args.poll().toString());
      case TRUE:
        return root.andEqualTo(segment, true);
      case FALSE:
        return root.andEqualTo(segment, false);
      case SIMPLE_PROPERTY:
        return root.andEqualTo(segment, args.poll());
      case NEGATING_SIMPLE_PROPERTY:
        return root.andNotEqualTo(segment, args.poll());
      default:
        throw new IllegalArgumentException("Unsupported keyword " + type);
    }
  }


}
    
    
    
    

    




    
    
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