Regex

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Overview

• Matching patterns in string fields
• Replacing substrings using regex patterns
• Searching for pattern occurrences
• Applying flags like g, i, m, u, s for fine-grained control

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Command Type

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Parameters

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Usage Examples

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Match a Pattern

{
  "command": "regex",
  "params": {
    "methodName": "match",
    "pattern": "\\d+",
    "source": "rawText"
  }
}

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Replace a Substring

{
  "command": "regex",
  "params": {
    "methodName": "replace",
    "pattern": "\\s+",
    "replaceValue": "_",
    "source": "name"
  }
}

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Replace All Occurrences

{
  "command": "regex",
  "params": {
    "methodName": "replaceAll",
    "pattern": ",",
    "replaceValue": ".",
    "source": "priceString"
  }
}

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Case-Insensitive Match

{
  "command": "regex",
  "params": {
    "methodName": "match",
    "pattern": "error",
    "flag": "i",
    "source": "message"
  }
}

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Supported Methods

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Common Use Cases

• Data Cleaning: Remove or replace unwanted characters from string fields
• Pattern Extraction: Extract numeric IDs, codes, or tokens from raw text
• Normalization: Standardize formats (e.g. date strings, phone numbers)

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Related Commands

• String Manipulation - Apply JS string methods to fields
• String Split - Split strings by a delimiter
• Filter - Filter objects after regex extraction