package foundation.persist.adapter;
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import foundation.server.config.DBaseType;
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public class EmptyAdapter implements IDBAdapter {
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@Override
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public String toSqlString(DBaseType type) {
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return null;
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}
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@Override
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public String getFunciton(DBaseType dbaseType, String functionName) {
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if ("ifEmpty".equalsIgnoreCase(functionName)) {
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return getEmpty(dbaseType);
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}
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return null;
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}
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private String getEmpty(DBaseType dbaseType) {
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if (dbaseType.isOracle()) {
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return "NVL";
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}
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else if (dbaseType.isMySQL()) {
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return "IFNULL";
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}
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else if (dbaseType.isSQLServer()) {
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return "ISNULL";
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}
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return "IFNULL";
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}
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}
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