import org.geotools.filter.IsEqualsToImpl; //导入依赖的package包/类
/**
 * Creates the filter.
 *
 * @param parameterList the parameter list
 * @return the filter
 */
@Override
public Filter createFilter(List<Expression> parameterList) {
    IsEqualsToImpl filter = null;

    if ((parameterList == null) || (parameterList.size() != 3)) {
        filter = new IsEqualToExtended();
    } else {
        LiteralExpressionImpl matchCase = (LiteralExpressionImpl) parameterList.get(2);

        filter = new IsEqualToExtended(parameterList.get(0), parameterList.get(1),
                (Boolean) matchCase.getValue());
    }
    return filter;
}
 

import org.geotools.filter.IsEqualsToImpl; //导入依赖的package包/类
@Override
public Class<?> getOriginalFilter() {
    return IsEqualsToImpl.class;
}
 

import org.geotools.filter.IsEqualsToImpl; //导入依赖的package包/类
/**
 * Gets the filter class.
 *
 * @return the filter class
 */
@Override
public Class<?> getFilterClass() {
    return IsEqualsToImpl.class;
}