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package sf.database.template.expression;
public class ExpressionHelp {
public static final String SQL_TEMPLATE_MAP_KEY = "_SQL_TEMPLATE_MAP_";
public static final String SQL_PARA_KEY = "_SQL_PARA_";
public static final String PARA_ARRAY_KEY = "_PARA_ARRAY_"; // 此参数保持不动,已被用于模板取值 _PARA_ARRAY_[n]
public static final String SQL_COUNT_KEY = "_SQL_COUNT_";//统计sql总数
private static ExpressionHelp instance = null;
public static ExpressionHelp getInstance() {
if (instance == null) {
instance = new ExpressionHelp();
}
return instance;
}
}
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