Create a New Chemical Terms Field

import com.im.commons.db.ddl.GenericColumnType

// These imports are not necessary in 5.9 and later
import com.im.commons.progress.*
import com.im.df.api.capabilities.*
import com.im.df.api.util.*;
import com.im.df.api.ddl.*;
import com.im.commons.db.ddl.*;
import com.im.df.api.support.*;

def ety = dataTree.rootVertex.entity
ety.schema.lockable.withLock('Create a new CT field'){ envRW ->
    // In IJC 5.11 and earlier
    def Class[] req1 = [ DFFieldChemicalTermsCapability.class ]
    def nt = DIFUtilities.findFirstAppropriateNewType(ety.getFields().getNewTypes(), false, req1, new Class[0])
    nt.options.newDFItemNameSafe = "Atom Count"
    nt.options.formulaSync = "atomCount"
    nt.options.genericType = GenericColumnType.INTEGER
    nt.create(envRW)
    // End of 5.11 code

    // In IJC 5.12 and later
    // DFFields.createChemTermsField(ety, "atomCount", GenericColumnType.INTEGER, "atomCount()", envRW)
    // End of 5.12+ code
}

Versions: This script has been tested on IJC version 6.0