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node-red/nodes/core/logic/10-switch.html
2018-01-22 23:25:02 +00:00

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HTML

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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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limitations under the License.
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<script type="text/x-red" data-template-name="switch">
<div class="form-row">
<label for="node-input-name"><i class="fa fa-tag"></i> <span data-i18n="common.label.name"></span></label>
<input type="text" id="node-input-name" data-i18n="[placeholder]common.label.name">
</div>
<div class="form-row">
<label data-i18n="switch.label.property"></label>
<input type="text" id="node-input-property" style="width: 70%"/>
<input type="hidden" id="node-input-outputs"/>
</div>
<div class="form-row node-input-rule-container-row">
<ol id="node-input-rule-container"></ol>
</div>
<div class="form-row">
<select id="node-input-checkall" style="width:100%; margin-right:5px;">
<option value="true" data-i18n="switch.checkall"></option>
<option value="false" data-i18n="switch.stopfirst"></option>
</select>
</div>
<div class="form-row">
<input type="checkbox" id="node-input-repair" style="display: inline-block; width: auto; vertical-align: top;">
<label style="width: auto;" for="node-input-repair"><span data-i18n="switch.label.repair"></span></label></input>
</div>
</script>
<script type="text/x-red" data-help-name="switch">
<p>Route messages based on their property values.</p>
<h3>Details</h3>
<p>When a message arrives, the node will evaluate each of the defined rules
and forward the message to the corresponding outputs of any matching rules.</p>
<p>Optionally, the node can be set to stop evaluating rules once it finds one
that matches.</p>
<p>The rules can be evaluated against an individual message property, a flow or global
context property or the result of a JSONata expression.</p>
<h3>Rules</h3>
<p>Routing rules are categorized into three:</p>
<dl>
<dt>value rules</dt>
<dd>
<table>
<tr>
<th>operator</th>
<th>description</th>
</tr>
<tr>
<td><b>==</b></td>
<td>property value is equals to specified value</td>
</tr>
<tr>
<td><b>!=</b></td>
<td>property value is not equals to specified value</td>
</tr>
<tr>
<td><b>&lt;</b></td>
<td>property value is less than specified value</td>
</tr>
<tr>
<td><b>&lt;=</b></td>
<td>property value is less than or equals to specified value</td>
</tr>
<tr>
<td><b>&gt;</b></td>
<td>property value is greater than specified value</td>
</tr>
<tr>
<td><b>&gt;=</b></td>
<td>property value is greater than or equals to specified value</td>
</tr>
<tr>
<td><b>is between</b></td>
<td>property value is between specified values</td>
</tr>
<tr>
<td><b>contains</b></td>
<td>property string value contains specified string value</td>
</tr>
<tr>
<td><b>matches regex</b></td>
<td>property string value matches specified regex</td>
</tr>
<tr>
<td><b>is true</b></td>
<td>property value is true</td>
</tr>
<tr>
<td><b>is false</b></td>
<td>property value is false</td>
</tr>
<tr>
<td><b>is null</b></td>
<td>property value is null</td>
</tr>
<tr>
<td><b>is not null</b></td>
<td>property value is not null</td>
</tr>
</table>
</dd>
<dt>sequence rules</dt>
<dd>
<table>
<tr>
<th>operator</th>
<th>description</th>
</tr>
<tr>
<td><b>head</b></td>
<td>message is included in the first specified number of messages in a sequence</td>
</tr>
<tr>
<td><b>tail</b></td>
<td>message is included in the last specified number of messages in a sequence</td>
</tr>
<tr>
<td><b>pos. between</b></td>
<td>message is included between specified positions in a sequence</td>
</tr>
</table>
</dd>
<dt>other rules</dt>
<dd>
<table>
<tr>
<th>operator</th>
<th>description</th>
</tr>
<tr>
<td><b>JSONata exp</b></td>
<td>specified JSONata expression evaluate to true. In JSONata expression, $I represents <code>msg.parts.index</code> and $N represents <code>msg.parts.count</code> respectively if exists.</td>
</tr>
<tr>
<td><b>otherwise</b></td>
<td>no matching rule found</td>
</tr>
</table>
</dd>
</dl>
<h3>Repair Sequence</h3>
<p>If <b>repair sequence (reconstruct parts property of outgoing messages)</b> checkbox is selected, <code>msg.parts</code> property are reconstructed for each port to make forks of valid sequences. Otherwise, <code>msg.parts</code> property of incoming messages are passed through.</p>
<h3>Note:</h3>
<p>This node internally keeps messages for its operation if <b>repair sequence</b> checkbox is ON. In order to prevent unexpected memory usage, maximum number of messages kept can be specified by <code>switchMaxKeptMsgsCount</code> property in <b>settings.js</b>.</p>
</script>
<script type="text/javascript">
(function() {
var operators = [
{v:"eq",t:"==",kind:'V'},
{v:"neq",t:"!=",kind:'V'},
{v:"lt",t:"<",kind:'V'},
{v:"lte",t:"<=",kind:'V'},
{v:"gt",t:">",kind:'V'},
{v:"gte",t:">=",kind:'V'},
{v:"btwn",t:"switch.rules.btwn",kind:'V'},
{v:"cont",t:"switch.rules.cont",kind:'V'},
{v:"regex",t:"switch.rules.regex",kind:'V'},
{v:"true",t:"switch.rules.true",kind:'V'},
{v:"false",t:"switch.rules.false",kind:'V'},
{v:"null",t:"switch.rules.null",kind:'V'},
{v:"nnull",t:"switch.rules.nnull",kind:'V'},
{v:"head",t:"switch.rules.head",kind:'S'},
{v:"index",t:"switch.rules.index",kind:'S'},
{v:"tail",t:"switch.rules.tail",kind:'S'},
{v:"jsonata_exp",t:"switch.rules.exp",kind:'O'},
{v:"else",t:"switch.rules.else",kind:'O'}
];
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} else if (t === 'msg' || t==='flow' || t==='global') {
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}
return clipValueLength(v);
}
RED.nodes.registerType('switch', {
color: "#E2D96E",
category: 'function',
defaults: {
name: {value:""},
property: {value:"payload", required:true, validate: RED.validators.typedInput("propertyType")},
propertyType: { value:"msg" },
rules: {value:[{t:"eq", v:"", vt:"str"}]},
checkall: {value:"true", required:true},
repair: {value:false},
outputs: {value:1}
},
inputs: 1,
outputs: 1,
outputLabels: function(index) {
var rule = this.rules[index];
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label: function() {
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labelStyle: function() {
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oneditprepare: function() {
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$("#node-input-property").typedInput({default:this.propertyType||'msg',types:['msg','flow','global','jsonata']});
var outputCount = $("#node-input-outputs").val("{}");
var andLabel = this._("switch.and");
var caseLabel = this._("switch.ignorecase");
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var numField = rule.find(".node-input-rule-num-value");
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btwnField1.typedInput("width",(newWidth-selectWidth-70));
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} else if ((type === "head") || (type === "tail")) {
numField.typedInput("width",(newWidth-selectWidth-70));
} else if (type === "jsonata_exp") {
expField.typedInput("width",(newWidth-selectWidth-70));
} else {
if (type === "true" || type === "false" || type === "null" || type === "nnull" || type === "else") {
// valueField.hide();
} else {
valueField.typedInput("width",(newWidth-selectWidth-70));
}
}
}
$("#node-input-rule-container").css('min-height','250px').css('min-width','450px').editableList({
addItem: function(container,i,opt) {
if (!opt.hasOwnProperty('r')) {
opt.r = {};
}
var rule = opt.r;
if (!rule.hasOwnProperty('t')) {
rule.t = 'eq';
}
if (!opt.hasOwnProperty('i')) {
opt._i = Math.floor((0x99999-0x10000)*Math.random()).toString(16);
}
var row = $('<div/>').appendTo(container);
var row2 = $('<div/>',{style:"padding-top: 5px; padding-left: 175px;"}).appendTo(container);
var row3 = $('<div/>',{style:"padding-top: 5px; padding-left: 102px;"}).appendTo(container);
var selectField = $('<select/>',{style:"width:120px; margin-left: 5px; text-align: center;"}).appendTo(row);
var group0 = $('<optgroup/>', { label: "value rules" }).appendTo(selectField);
for (var d in operators) {
if(operators[d].kind === 'V') {
group0.append($("<option></option>").val(operators[d].v).text(/^switch/.test(operators[d].t)?node._(operators[d].t):operators[d].t));
}
}
var group1 = $('<optgroup/>', { label: "sequence rules" }).appendTo(selectField);
for (var d in operators) {
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group1.append($("<option></option>").val(operators[d].v).text(/^switch/.test(operators[d].t)?node._(operators[d].t):operators[d].t));
}
}
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if(operators[d].kind === 'O') {
selectField.append($("<option></option>").val(operators[d].v).text(/^switch/.test(operators[d].t)?node._(operators[d].t):operators[d].t));
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}
var valueField = $('<input/>',{class:"node-input-rule-value",type:"text",style:"margin-left: 5px;"}).appendTo(row).typedInput({default:'str',types:['msg','flow','global','str','num','jsonata',previousValueType]});
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var finalspan = $('<span/>',{style:"float: right;margin-top: 6px;"}).appendTo(row);
finalspan.append(' &#8594; <span class="node-input-rule-index">'+(i+1)+'</span> ');
var caseSensitive = $('<input/>',{id:"node-input-rule-case-"+i,class:"node-input-rule-case",type:"checkbox",style:"width:auto;vertical-align:top"}).appendTo(row2);
$('<label/>',{for:"node-input-rule-case-"+i,style:"margin-left: 3px;"}).text(caseLabel).appendTo(row2);
selectField.change(function() {
resizeRule(container);
var type = selectField.val();
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valueField.typedInput('hide');
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numValueField.typedInput('hide');
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btwnValue2Field.typedInput('hide');
expValueField.typedInput('hide');
numValueField.typedInput('show');
valueField.typedInput('hide');
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btwnValue2Field.typedInput('value',rule.v2);
btwnValue2Field.typedInput('type',rule.v2t||'num');
} else if ((rule.t === "head") || (rule.t === "tail")) {
numValueField.typedInput('value',rule.v);
numValueField.typedInput('type',rule.vt||'num');
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expValueField.typedInput('value',rule.v);
expValueField.typedInput('type',rule.vt||'jsonata');
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valueField.typedInput('value',rule.v);
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caseSensitive.prop('checked',true);
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caseSensitive.prop('checked',false);
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selectField.change();
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sortable: true,
removable: true
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oneditsave: function() {
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r.vt = rule.find(".node-input-rule-num-value").typedInput('type');
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r.vt = rule.find(".node-input-rule-exp-value").typedInput('type');
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r.v = rule.find(".node-input-rule-value").typedInput('value');
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node.rules.push(r);
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this.propertyType = $("#node-input-property").typedInput('type');
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})();
</script>