1. 把 validateMe 分解成 静态数据检查（给客户端调用）validateMe 和 动态可执行性检查（给链节点调用）executableMe.

2. 在 Action.api.prepare() 里，生成可运行的对象 typedAction 存入 ActionPool，而不是仅仅存数据 option.Action进去。
3. 删除 Action.getJson()，把 DAD.verifyXxx(action) 都改为 MOM.verifyXxx().
4. 添加了 ActionRegisterChain.js 作为 应用链注册事务。

Action.js

@@ -1,5 +1,5 @@
 var Ling = require('fon.ling')
-var Ticrypto = require('tic.crypto')
+var ticCrypto = require('tic.crypto')
 
 /** ****************** Public of instance ********************/
 
@@ -35,7 +35,7 @@ MOM._model = {
 
 MOM.packMe = function (keypair) { // 由前端调用，后台不创建
   this.actorPubkey = keypair.pubkey
-  this.actorAddress = Ticrypto.pubkey2address(keypair.pubkey)
+  this.actorAddress = ticCrypto.pubkey2address(keypair.pubkey)
   this.timestamp = new Date()
 
   this.signMe(keypair.seckey)
@@ -45,61 +45,88 @@ MOM.packMe = function (keypair) { // 由前端调用，后台不创建
 
 MOM.signMe = function (seckey) { // 由前端调用，后台不该进行签名
   let json = this.getJson({ exclude: ['hash', 'blockHash', 'actorSignature'] }) // 是前端用户发起事务时签字，这时候还不知道进入哪个区块，所以不能计入blockHash
-  this.actorSignature = Ticrypto.sign(json, seckey)
+  this.actorSignature = ticCrypto.sign(json, seckey)
   return this
 }
 
 MOM.hashMe = function () {
-  this.hash = Ticrypto.hash(this.getJson({ exclude: ['hash', 'blockHash'] })) // block.hash 受到所包含的actionList影响，所以action不能受blockHash影响，否则循环了
+  this.hash = ticCrypto.hash(this.getJson({ exclude: ['hash', 'blockHash'] })) // block.hash 受到所包含的actionList影响，所以action不能受blockHash影响，否则循环了
   return this
 }
 
-DAD.getJson = function (action, option = {}) {
+MOM.verifySig = function() {
-  let data = {}
+  let json = this.getJson({ exclude: ['hash', 'blockHash', 'actorSignature'] })
-  let sortedKey = Object.keys(DAD.prototype._model).sort()
+  let result = ticCrypto.verify(json, this.actorSignature, this.actorPubkey)
-  for (let exkey of option.exclude) { sortedKey.splice(sortedKey.indexOf(exkey), 1) }
+  return result
-  for (let key of sortedKey) { // 忽略一些不需要签名的属性
+}
-    data[key] = action[key]
+DAD.verifySig = function (actionData) {
+  let typedAction = new wo[actionData.type](actionData)
+  return typedAction.verifySig()
+}
+
+MOM.verifyAddress = function () {
+  return this.actorAddress === ticCrypto.pubkey2address(this.actorPubkey)
+}
+DAD.verifyAddress = function (actionData) {
+  let typedAction = new wo[actionData.type](actionData)
+  return typedAction.verifyAddress()
+}
+
+MOM.verifyHash = function () {
+  return this.hash === ticCrypto.hash(this.getJson({ exclude: ['hash', 'blockHash'] }))
+}
+DAD.verifyHash = function (actionData) {
+  let typedAction = new wo[actionData.type](actionData)
+  return typedAction.verifyHash()
+}
+
+DAD.build = function (action, keypair) { // Applicable on client. 客户端调用 Action.build，即可新建、并打包成一个完整的子事务，不需要亲自调用 constructor, packMe 等方法。 
+  if (action && action.type && keypair && keypair.seckey && keypair.pubkey) {
+    let typedAction = new wo[action.type](action)
+    if (typedAction.validateMe()) {
+      typedAction.packMe(keypair)
+      return typedAction
     }
-  let json = JSON.stringify(data)
+  }
-  return json
+  return null
 }
 
-DAD.verifySig = function (action) {
+MOM.validateMe = function() { // Applicable on chain server. 子类应当覆盖本方法，静态的检查事务内容的格式和语义，是否符合该子类事务的特性要求。To validate an action's content format. 
-  let json = DAD.getJson(action, { exclude: ['hash', 'blockHash', 'actorSignature'] })
-  let res = Ticrypto.verify(json, action.actorSignature, action.actorPubkey)
-  return res
-}
-
-DAD.verifyAddress = function (action) {
-  return action.actorAddress === Ticrypto.pubkey2address(action.actorPubkey)
-}
-
-DAD.verifyHash = function (action) {
-  return action.hash === Ticrypto.hash(DAD.getJson(action, { exclude: ['hash', 'blockHash'] }))
-}
-
-MOM.validateMe = async function() { // 子类应当覆盖本方法。
   // to implement in subclasses: 检查子类事务内容的格式
   let typedAction = new wo[this.type](this)
-  return await typedAction.validateMe()
+  return typedAction.validateMe()
 }
-DAD.validate = async function (action) {
+DAD.validate = function (action) { // Allicable on both client and chain server. 
   mylog.info(`Validating action type=${action.type} of hash=${action.hash}`)
   let typedAction = new wo[action.type](action)
-  return await typedAction.validateMe()
+  return typedAction.validateMe()
 }
 
-MOM.executeMe = async function() { // 子类应当覆盖本方法。
+MOM.executableMe = async function() { // Applicable on chain server. 子类应当覆盖本方法，动态的检查事务内容，在当前链状态下，是否能执行。To check if an action is executableMe given the current chain status.
+  let typedAction = new wo[this.type](this)
+  return await typedAction.executableMe()
+}
+DAD.executable = async function(action) { // For chain server.
+  let typedAction = new wo[action.type](action)
+  if (typedAction.hasOwnProperty('executableMe')) { // 防止子类忘了定义自己的 executableMe
+    return await typedAction.executableMe()
+  }else {
+    return true
+  }
+}
+MOM.executeMe = async function() { // For chain server. 子类应当覆盖本方法，执行事务，记录其（除了存入 Action 数据表之外的）副作用到内存数据库或其他地方。
   // to implement in subclasses: 把action的影响，汇总登记到其他表格（用于辅助的、索引的表格），方便快速索引、处理。每种事务类型都要重定义这个方法。
   let typedAction = new wo[this.type](this)
   return await typedAction.executeMe()
 }
-DAD.execute = async function (action) {
+DAD.execute = async function (action) {  // For chain server.
   mylog.info(`Excecuting action type=${action.type} of hash=${action.hash}`)
   let typedAction = new wo[action.type](action)
   return await typedAction.executeMe()
 }
+// [todo 20190411] 执行事务池中的所有事务
+// DAD.executePool = async function() {
+// }
 
 /**
  * 获取一批交易，在出块时调用。调用actionPool的内容被深拷贝到currentActionPool后自动清空。
@@ -137,14 +164,16 @@ DAD.api.prepare = async function (option) {
     } catch (error) {}
   }
   // 前端发来action数据，进行格式检查（不检查是否可执行--这和事务类型、执行顺序有关）后放入缓冲池。
-  if (option && option.Action && option.Action.type && option.Action.hash && !DAD.actionPool[option.Action.hash]) {
+  if (option && option.Action && option.Action.type && wo[option.Action.type] && option.Action.hash && !DAD.actionPool[option.Action.hash]) {
-    if (DAD.verifyAddress(option.Action) && // 只检查所有事务通用的格式
+    let typedAction = new wo[option.Action.type](option.Action)
-        DAD.verifySig(option.Action) &&
+    if (typedAction.verifyAddress() && // 只检查所有事务通用的格式
-        DAD.verifyHash(option.Action) &&
+        typedAction.verifySig() &&
+        typedAction.verifyHash() &&
         !DAD.actionPool[option.Action.hash] &&
-        (await DAD.validate(option.Action)) // 调用子类的 validate 方法，检查子类的事务内容格式
+        typedAction.validateMe() && // 检查事务的内容是否符合该子类事务的格式
+        (await typedAction.executableMe()) // 检查事务是否可执行，在当前链的状态下。
     ) {
-      DAD.actionPool[option.Action.hash] = option.Action
+      DAD.actionPool[option.Action.hash] = typedAction
       DAD.actionPoolInfo.totalAmount += option.Action.amount || 0
       DAD.actionPoolInfo.totalFee += option.Action.fee || 0
       wo.NodeNet.broadcast({ Action: option.Action })

ActionMultisig.js

@@ -137,28 +137,28 @@ step3:发起人申请执行
     }
 }
 */
+
 MOM.validateMe = async function () {
-  if (this.json.act === 'createTransfer') // 创建挂起的多重签名事务
-  {
-    DAD.pendingPool[this.hash] = this
-    return false
-  } else if (this.json.act === 'addSig') // 签名者签名
-  {
-    DAD.pendingPool[this.hash].json[this.actorPubkey] = this.json.signature
-    return false
-  } else {
   return wo.Crypto.isAddress(this.toAddress) &&
     this.fee >= wo.Config.MIN_FEE_ActionTransfer &&
-        (await wo.Store.getBalance(this.actorAddress)) >= this.amount + this.fee && // Todo:引入缓存账户
     this.toAddress != this.actorAddress
+}
+
+MOM.executableMe = async function () {
+  if (this.json.act === 'createTransfer') { // 创建挂起的多重签名事务
+    DAD.pendingPool[this.hash] = this
+    return false
+  } else if (this.json.act === 'addSig') { // 签名者签名
+    DAD.pendingPool[this.hash].json[this.actorPubkey] = this.json.signature
+    return false
   }
+  return true
 }
 
 MOM.executeMe = async function () {
   switch (this.json.act) {
     // 多重签名账户注册
-    case 'sign':
+    case 'sign': {
-    {
       let actor = await wo.Account.getOne({ Account: { address: this.actorAddress } })
       if (actor && actor.type !== 'multisig') {
         // 检查账户类型，只有不是多重签名账户的才可以执行
@@ -173,8 +173,7 @@ MOM.executeMe = async function () {
       return this
     }
     // 多重签名账户执行转账
-    case 'emitTransfer':
+    case 'emitTransfer': {
-    {
       let sender = await wo.Account.getOne({ Account: { address: this.actorAddress } })
       if (sender && this.checkMultiSig(sender) && this.toAddress != this.actorAddress && sender.balance >= this.amount + this.fee) {
         await sender.setMe({ Account: { balance: sender.balance - this.amount - this.fee }, cond: { address: sender.address } })

ActionRegisterChain.js

@@ -0,0 +1,36 @@
+const Action = require('./Action.js')
+
+const DAD = module.exports = function ActionRegisterChain (prop) {
+  this._class = this.constructor.name
+  this.setProp(prop) // 没有定义 ActionTransfer.prototype._model，因此继承了上级Action.prototype._model，因此通过this.setProp，继承了上级Action定义的实例自有数据。另一个方案是，调用 Action.call(this, prop)
+  this.type = this.constructor.name
+}
+DAD.__proto__ = Action
+const MOM = DAD.prototype
+MOM.__proto__ = Action.prototype
+
+MOM.validateMe = function () {
+  let result = (this.fee >= wo.Config.MIN_FEE_ActionRegisterChain || 0) &&
+    // 检查事务内容数据，是否符合本类事务的格式和语义要求：
+    this.json && 
+    this.json.consensus && // 共识机制
+    this.json.network && // 网络机制
+    this.json.chain && // 区块机制
+    this.json.chain.period && // 出块周期
+    this.json.chain.size // 区块大小
+  return result
+}
+
+MOM.executableMe = async function() {
+  // todo: 检查是否已有同名的应用链？以及其他检查。
+  let balance = await wo.Store.getBalance(this.actorAddress)
+  return balance >= this.fee 
+}
+
+MOM.executeMe = async function () {
+  return this
+}
+
+/** ****************** Public of class ********************/
+
+DAD.api = {}

ActionStore.js

@@ -16,7 +16,13 @@ MOM.__proto__ = Action.prototype
 
 MOM.validateMe = function () {
   // check size, account balance >= fee, fee>wo.Config.MIN_FEE_ActionStore
-  return this.fee >= wo.Config.MIN_FEE_ActionStore
+  return (this.fee >= wo.Config.MIN_FEE_ActionStore || 0)
+}
+
+MOM.executableMe = async function (){
+  let balance = await wo.Store.getBalance(this.actorAddress)
+  return balance >= this.fee &&
+    true // todo: 检查服务器上的存储容量是否还够用？
 }
 
 MOM.executeMe = async function () {

ActionTransfer.js

@@ -9,11 +9,15 @@ DAD.__proto__ = Action
 const MOM = DAD.prototype
 MOM.__proto__ = Action.prototype
 
-MOM.validateMe = async function () {
+MOM.validateMe = function () {
   // if (sender && sender.type !== 'multisig' && action.toAddress != action.actorAddress && sender.balance >= action.amount + action.fee){
-  let balance = await wo.Store.getBalance(this.actorAddress)
   return this.actorAddress && this.toAddress && this.toAddress != this.actorAddress 
-    && this.amount && this.amount > 0 && this.fee >= wo.Config.MIN_FEE_ActionTransfer && balance >= this.amount + this.fee 
+    && this.amount && this.amount > 0 && (this.fee >= wo.Config.MIN_FEE_ActionTransfer || 0)
+}
+
+MOM.executableMe = async function() {
+  let balance = await wo.Store.getBalance(this.actorAddress)
+  return balance >= this.amount + this.fee 
 }
 
 MOM.executeMe = async function () {