Android Open Source - SORM Where Impl

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License

The source code is released under:

MIT License

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Java Source Code

package com.annotation.entity;
//from   w  ww.  jav  a2s  .  c o m
import java.util.regex.Matcher;
import java.util.regex.Pattern;

@SuppressWarnings("unchecked")
public abstract class WhereImpl<T> implements Wherable<T> {

  private StringBuffer _where;

  public WhereImpl() {
    _where = new StringBuffer();
  }

  @Override
  public T where(String column, String operation, String value) {
    _where.append(column).append(" ");
    _where.append(operation).append(" ");
    _where.append("\"").append(value.replaceAll("\\\"", "\\\\\""))
        .append("\"").append(" ");
    return (T) this;
  }

  // ???????????????id = 1 ???: id = 1 and age=18
  @Override
  public T where(String expression) {
    Pattern p = Pattern.compile("(\\S+)\\s*([!<>=]+)\\s*(\\S+)");
    Matcher m = p.matcher(expression);
    if (m.matches()) {
      return where(m.group(1), m.group(2), m.group(3));
    }
    return (T) this;
  }

  @Override
  public T and() {
    _where.append("and").append(" ");
    return (T) this;
  }

  @Override
  public T or() {
    _where.append("or").append(" ");
    return (T) this;
  }

  public StringBuffer getWhere() {
    return this._where;
  }

  public boolean hasWhere() {
    return this._where.length() > 0;
  }
}

Java Source Code List