Page Comparison

import com.atlassian.crowd.embedded.api.User;
import com.atlassian.jira.component.ComponentAccessor;
import com.atlassian.jira.issue.CustomFieldManager;
import com.atlassian.jira.issue.Issue;
import com.atlassian.jira.issue.IssueManager;
import com.atlassian.jira.issue.fields.CustomField;
import com.atlassian.jira.security.JiraAuthenticationContext;
import com.atlassian.plugin.PluginAccessor;
import com.atlassian.jira.user.ApplicationUser;
import org.apache.log4j.Logger;

// set up logger
Logger log=Logger.getLogger("com.idalko.scripts");

// get an issue
IssueManager issueManager = ComponentAccessor.getOSGiComponentInstanceOfType(IssueManager.class);
Issue issue = issueManager.getIssueObject("TEST-3");
Long issueId = issue.getId().toLong();

// get TGE custom field
CustomFieldManager customFieldManager = ComponentAccessor.getOSGiComponentInstanceOfType(CustomFieldManager.class);
CustomField tgeCustomField = customFieldManager.getCustomFieldObjectsByName("Grid One").get(0);
Long tgeCustomFieldId = tgeCustomField.getIdAsLong();

ApplicationUser applicationUser = ComponentAccessor.getJiraAuthenticationContext().getLoggedInUser();

// read grid data
PluginAccessor pluginAccessor = ComponentAccessor.getPluginAccessor();
Class apiServiceClass = pluginAccessor.getClassLoader().findClass("com.idalko.tgng.jira.server.api.GridService");
def gridFieldData = ComponentAccessor.getOSGiComponentInstanceOfType(apiServiceClass);

StringBuilder result = new StringBuilder();
def callResult = null;

try {
    callResult = gridFieldData.readFieldData(issueId, tgeCustomFieldId, applicationUser, null);
} catch (Exception e) {
    log.error(e.getMessage())
}
    def gridRows = callResult.getRows()

for (row in gridRows) {
    def columns = row.getColumns();
    def rowId = row.getRowId();
    //log.error(columns.toString())
    StringBuilder tempResult = new StringBuilder();
    
    for (column in columns.keySet()) {
        tempResult.append("column ID: " + column + ", value: " + columns.get(column) + ", " + System.lineSeparator())        
    }
    
    result.append("Grid ID=" + tgeCustomFieldId + ", row ID: " + rowId + ", columns " + tempResult + "<br>")
}


return result;