xml⽂文件 在工程目录src/main/webapp/WEB-INF目录下，编辑web.xml文件： web.xml原始文件内容如下： 将web.xml文件内容修改为（此处为3.1版本）： Table of Contents

Transactions of the block, only txid stored on kv, the detail information 33 // stored in another table 34 // 交易内容 35 repeated Transaction transactions = 11; 36 // The transaction count of the 转换后的c代码最终会编译成一个动态链接库来给XVM运行时来使用，在每个 生成的动态链接库里面都有如下初始化函数。 这个初始化函数会自动对wasm 里面的各个模块进行初始化，包括全局变量、内存、table、外部符号解析等。 1 typedef struct { 2 void* user_ctx; 3 wasm_rt_gas_t gas; 4 u32 g0; 5 t)); 11 (h->user_ctx) = user_ctx; 12 init_globals(h); 13 init_memory(h); 14 init_table(h); 15 return h; 16 } 3.4. 语言运行环境 3.4.1. c++运行环境 c++因为没有runtime，因此运行环境相对比较简单，只需要设置基础的堆栈分 布

the various query operators describes how to construct queries and combine expressions. Field types table lists the various field types peewee supports and the parameters they accept. There is also an extension Driver Models and Fields Fields Field-naming conflicts Creating model tables Model options and table metadata Indexes and Constraints Non-integer Primary Keys, Composite Keys and other Tricks Self-referential Bulk inserts Updating existing records Atomic updates Deleting records Selecting a single record Create or get Selecting multiple records Filtering records Sorting records Getting random records Paginating

various query operators describes how to construct queries and combine expressions. • Field types table lists the various field types peewee supports and the parameters they accept. There is also an extension options, use: python runtests.py --help Note: To run tests against Postgres or MySQL you need to create a database named “peewee_test”. To test the Postgres extension module, you will also want to install extension in the postgres test database: -- install the hstore extension on the peewee_test postgres db. CREATE EXTENSION hstore; 1.1.3 Optional dependencies Note: To use Peewee, you typically won’t need anything

various query operators describes how to construct queries and combine expressions. • Field types table lists the various field types peewee supports and the parameters they accept. There is also an extension options, use: python runtests.py --help Note: To run tests against Postgres or MySQL you need to create a database named “peewee_test”. To test the Postgres extension module, you will also want to install extension in the postgres test database: -- install the hstore extension on the peewee_test postgres db. CREATE EXTENSION hstore; 1.1.3 Optional dependencies Note: To use Peewee, you typically won’t need anything

various query operators describes how to construct queries and combine expressions. Field types table lists the various field types peewee supports and the parameters they accept. There is also an extension Adding a new Database Driver Models and Fields Fields Creating model tables Model options and table metadata Indexes and Constraints Non-integer Primary Keys, Composite Keys and other Tricks Self-referential Bulk inserts Updating existing records Atomic updates Deleting records Selecting a single record Create or get Selecting multiple records Filtering records Sorting records Getting random records Paginating

various query operators describes how to construct queries and combine expressions. • Field types table lists the various field types peewee supports and the parameters they accept. There is also an extension options, use: python runtests.py --help Note: To run tests against Postgres or MySQL you need to create a database named “peewee_test”. To test the Postgres extension module, you will also want to install extension in the postgres test database: -- install the hstore extension on the peewee_test postgres db. CREATE EXTENSION hstore; 1.1.3 Optional dependencies Note: To use Peewee, you typically won’t need anything

queries Adding a new Database Driver Models and Fields Fields Creating model tables Model options and table metadata Indexes and Constraints Non-integer Primary Keys, Composite Keys and other Tricks Self-referential Bulk inserts Updating existing records Atomic updates Deleting records Selecting a single record Create or get Selecting multiple records Filtering records Sorting records Getting random records Paginating Values Window functions Retrieving row tuples / dictionaries / namedtuples Returning Clause Common Table Expressions Foreign Keys and Joins Query operators Three valued logic Adding user-defined operators

options, use: python runtests.py --help Note: To run tests against Postgres or MySQL you need to create a database named “peewee_test”. To test the Postgres extension module, you will also want to install extension in the postgres test database: -- install the hstore extension on the peewee_test postgres db. CREATE EXTENSION hstore; 1.1.3 Optional dependencies Note: To use Peewee, you typically won’t need anything concepts: Object Corresponds to. . . Model class Database table Field instance Column on a table Model instance Row in a database table When starting a project with peewee, it’s typically best to

the various query operators describes how to construct queries and combine expressions. Field types table lists the various field types peewee supports and the parameters they accept. There is also an extension queries Adding a new Database Driver Models and Fields Fields Creating model tables Model options and table metadata Indexes and Constraints Non-integer Primary Keys, Composite Keys and other Tricks Self-referential Bulk inserts Updating existing records Atomic updates Deleting records Selecting a single record Create or get Selecting multiple records Filtering records Sorting records Getting random records Paginating