protected AvgAggregationBuilder regAvgA(String name, String field) {
        AvgAggregationBuilder builder = AggregationBuilders.avg(name).field(field);
        regA(builder);
        return builder;
    }

    protected MaxAggregationBuilder regMaxA(String name, String field) {
        MaxAggregationBuilder builder = AggregationBuilders.max(name).field(field);
        regA(builder);
        return builder;
    }

     * Returns the field.
     *
     * @return the field
     */
    Field getField();

    /**
     * Returns the field name.
     *
     * @return the field name
     */
    String getFieldName();

    /**
     * Returns the type of the field.
     *
     * @param <T>
     *            the type of the field
     * @return the type of the field
     */
    <T> Class<T> getFieldType();

    /**

     * @param field the field name to check
     * @return true if the field can be used for sorting, false otherwise
     */
    protected boolean isSortField(final String field) {
        return sortFieldSet != null && sortFieldSet.contains(field);
    }

    /**
     * Checks if the specified field can be used for faceted search.
     * Uses O(1) Set lookup for improved performance.
     *
     * @param field the field name to check

     */
    protected Map<String, Long> queryCountMap = new LinkedHashMap<>();

    /**
     * List of field facets containing aggregated field values and their counts.
     */
    protected List<Field> fieldList = new ArrayList<>();

    /**
     * Constructs a FacetResponse from OpenSearch aggregations.
     * Processes both field facets and query facets from the aggregation results.
     *

                + "<doc>\n"//
                + "<field name=\"title\"><list><item>タイトル</item></list></field>\n"//
                + "<field name=\"body\"><list><item>第一章 第一節 ほげほげふがふが LINK 第2章 第2節</item></list></field>\n"//
                + "<field name=\"pcount\">2.0</field>\n"//
                + "<field name=\"true\">true</field>\n"//
                + "<field name=\"false\">false</field>\n"//
                + "</doc>";

	expr.SQL = m.DataTypeOf(field)

	if field.NotNull {
		expr.SQL += " NOT NULL"
	}

	if field.HasDefaultValue && (field.DefaultValueInterface != nil || field.DefaultValue != "") {
		if field.DefaultValueInterface != nil {
			defaultStmt := &gorm.Statement{Vars: []interface{}{field.DefaultValueInterface}}
			m.Dialector.BindVarTo(defaultStmt, defaultStmt, field.DefaultValueInterface)

	public static final field TLS_KRB5_WITH_RC4_128_SHA Lokhttp3/CipherSuite;
	public static final field TLS_PSK_WITH_3DES_EDE_CBC_SHA Lokhttp3/CipherSuite;
	public static final field TLS_PSK_WITH_AES_128_CBC_SHA Lokhttp3/CipherSuite;
	public static final field TLS_PSK_WITH_AES_256_CBC_SHA Lokhttp3/CipherSuite;
	public static final field TLS_PSK_WITH_RC4_128_SHA Lokhttp3/CipherSuite;

}

// ParseUniqueConstraints parse schema unique constraints
func (schema *Schema) ParseUniqueConstraints() map[string]UniqueConstraint {
	uniques := make(map[string]UniqueConstraint)
	for _, field := range schema.Fields {
		if field.Unique {
			name := schema.namer.UniqueName(schema.Table, field.DBName)
			uniques[name] = UniqueConstraint{Name: name, Field: field}
		}
	}
	return uniques

	// Columns
	AddColumn(dst interface{}, field string) error
	DropColumn(dst interface{}, field string) error
	AlterColumn(dst interface{}, field string) error
	MigrateColumn(dst interface{}, field *schema.Field, columnType ColumnType) error
	// MigrateColumnUnique migrate column's UNIQUE constraint, it's part of MigrateColumn.
	MigrateColumnUnique(dst interface{}, field *schema.Field, columnType ColumnType) error

				if name == "" {
					subName := field.Name
					const key = "COMPOSITE"
					if composite, found := settings[key]; found {
						if len(composite) == 0 || composite == key {
							err = fmt.Errorf(
								"the composite tag of %s.%s cannot be empty",
								field.Schema.Name,
								field.Name)
							return
						}
						subName = composite
					}
					name = field.Schema.namer.IndexName(