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node_modules/mysql2/lib/commands/execute.js

@@ -0,0 +1,102 @@
+'use strict';
+
+const Command = require('./command.js');
+const Query = require('./query.js');
+const Packets = require('../packets/index.js');
+
+const getBinaryParser = require('../parsers/binary_parser.js');
+
+class Execute extends Command {
+  constructor(options, callback) {
+    super();
+    this.statement = options.statement;
+    this.sql = options.sql;
+    this.values = options.values;
+    this.onResult = callback;
+    this.parameters = options.values;
+    this.insertId = 0;
+    this._rows = [];
+    this._fields = [];
+    this._result = [];
+    this._fieldCount = 0;
+    this._rowParser = null;
+    this._executeOptions = options;
+    this._resultIndex = 0;
+    this._localStream = null;
+    this._unpipeStream = function() {};
+    this._streamFactory = options.infileStreamFactory;
+    this._connection = null;
+  }
+
+  buildParserFromFields(fields, connection) {
+    return getBinaryParser(fields, this.options, connection.config);
+  }
+
+  start(packet, connection) {
+    this._connection = connection;
+    this.options = Object.assign({}, connection.config, this._executeOptions);
+    const executePacket = new Packets.Execute(
+      this.statement.id,
+      this.parameters,
+      connection.config.charsetNumber,
+      connection.config.timezone
+    );
+    //For reasons why this try-catch is here, please see
+    // https://github.com/sidorares/node-mysql2/pull/689
+    //For additional discussion, see
+    // 1. https://github.com/sidorares/node-mysql2/issues/493
+    // 2. https://github.com/sidorares/node-mysql2/issues/187
+    // 3. https://github.com/sidorares/node-mysql2/issues/480
+    try {
+      connection.writePacket(executePacket.toPacket(1));
+    } catch (error) {
+      this.onResult(error);
+    }
+    return Execute.prototype.resultsetHeader;
+  }
+
+  readField(packet, connection) {
+    let fields;
+    // disabling for now, but would be great to find reliable way to parse fields only once
+    // fields reported by prepare can be empty at all or just incorrect - see #169
+    //
+    // perfomance optimisation: if we already have this field parsed in statement header, use one from header
+    // const field = this.statement.columns.length == this._fieldCount ?
+    //  this.statement.columns[this._receivedFieldsCount] : new Packets.ColumnDefinition(packet);
+    const field = new Packets.ColumnDefinition(
+      packet,
+      connection.clientEncoding
+    );
+    this._receivedFieldsCount++;
+    this._fields[this._resultIndex].push(field);
+    if (this._receivedFieldsCount === this._fieldCount) {
+      fields = this._fields[this._resultIndex];
+      this.emit('fields', fields, this._resultIndex);
+      return Execute.prototype.fieldsEOF;
+    }
+    return Execute.prototype.readField;
+  }
+
+  fieldsEOF(packet, connection) {
+    // check EOF
+    if (!packet.isEOF()) {
+      return connection.protocolError('Expected EOF packet');
+    }
+    this._rowParser = this.buildParserFromFields(
+      this._fields[this._resultIndex],
+      connection
+    );
+    return Execute.prototype.row;
+  }
+}
+
+Execute.prototype.done = Query.prototype.done;
+Execute.prototype.doneInsert = Query.prototype.doneInsert;
+Execute.prototype.resultsetHeader = Query.prototype.resultsetHeader;
+Execute.prototype._findOrCreateReadStream =
+  Query.prototype._findOrCreateReadStream;
+Execute.prototype._streamLocalInfile = Query.prototype._streamLocalInfile;
+Execute.prototype.row = Query.prototype.row;
+Execute.prototype.stream = Query.prototype.stream;
+
+module.exports = Execute;