@jaxolotl/wdclib
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Required Library to bridge javascript with Tableau. Use the scripts below to create the combined shim library. i.e. npm run-script build_and_copy
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<a href="..\index.html">All files</a> / <a href="index.html">wdclib</a> Table.js
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">/**
*
*/
class Table {
/**
* Represents a single table which Tableau has requeste
*
* @param {Object} tableInfo Information about the table which has been requested.
* This is guaranteed to be one of the tables the connector returned in the call to getSchema.
*
* @param {string=} incrementValue Defines the incremental update value for this table.
* Empty string if there is not an incremental update requested.
*
* @param {Boolean=} isJoinFiltered Whether or not this table is meant to be filtered using filterValues.
* @param {String=} filterColumnId If this table is filtered, this is the column where the filter values should be found.
* @param {Array} filterValues An array of strings which specifies the values we want to retrieve.
* For example, if an ID column was the filter column, this would be a collection of IDs to retrieve.
*
* @param {Function} dataCallbackFn
*/
constructor (tableInfo, incrementValue = '', isJoinFiltered = false, filterColumnId = '', filterValues = [], dataCallbackFn) {
this.tableInfo = tableInfo;
this.incrementValue = incrementValue;
this.isJoinFiltered = isJoinFiltered;
this.filterColumnId = filterColumnId;
this.filterValues = filterValues;
this._dataCallbackFn = dataCallbackFn; // privacy by dangling underscore
// bind the public facing version of this function so it can be passed around
this.appendRows = this._appendRows.bind(this);
}
/**
* Appends the given rows to the set of data contained in this table
*
* @param {Array} data - Either an array of arrays or an array of objects which represent the individual rows of data to append to this table
*
* @returns {Boolean}
*/
_appendRows (data) {
// note: add boolean return for testing purpose
// Do some quick validation that this data is the format we expect
// is this validation enough? shouldn't we throw an error? (Jax)
if (!data) {
console.warn('rows data is null or undefined');
return false;
}
if (!Array.isArray(data)) {
// Log a warning because the data is not an array like we expected
// is this validation enough? shouldn't we throw an error? (Jax)
console.warn('Table.appendRows must take an array of arrays or array of objects');
return false;
}
// Call back with the rows for this table
this._dataCallbackFn(this.tableInfo.id, data);
return true;
}
}
export default Table;
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