107 lines
2.4 KiB
Java
107 lines
2.4 KiB
Java
package eu.dnetlib.openaire.common;
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import java.io.Serializable;
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import java.sql.*;
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import org.hibernate.HibernateException;
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import org.hibernate.engine.spi.SharedSessionContractImplementor;
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import org.hibernate.usertype.UserType;
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/**
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* Created by claudio on 05/07/2017.
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*/
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public class GenericArrayUserType<T extends Serializable> implements UserType {
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protected static final int[] SQL_TYPES = { Types.ARRAY };
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private Class<T> typeParameterClass;
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@Override
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public Object assemble(Serializable cached, Object owner) throws HibernateException {
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return this.deepCopy(cached);
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}
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@Override
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public Object deepCopy(Object value) throws HibernateException {
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return value;
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}
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@SuppressWarnings("unchecked")
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@Override
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public Serializable disassemble(Object value) throws HibernateException {
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return (T) this.deepCopy(value);
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}
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@Override
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public boolean equals(Object x, Object y) throws HibernateException {
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if (x == null) {
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return y == null;
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}
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return x.equals(y);
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}
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@Override
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public int hashCode(Object x) throws HibernateException {
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return x.hashCode();
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}
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@Override
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public Object nullSafeGet(final ResultSet resultSet,
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final String[] names,
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final SharedSessionContractImplementor sharedSessionContractImplementor,
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final Object o)
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throws HibernateException, SQLException {
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if (resultSet.wasNull()) {
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return null;
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}
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if (resultSet.getArray(names[0]) == null) {
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return new Integer[0];
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}
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Array array = resultSet.getArray(names[0]);
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@SuppressWarnings("unchecked")
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T javaArray = (T) array.getArray();
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return javaArray;
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}
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@Override
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public void nullSafeSet(final PreparedStatement statement,
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final Object value,
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final int index,
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final SharedSessionContractImplementor session)
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throws HibernateException, SQLException {
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Connection connection = statement.getConnection();
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if (value == null) {
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statement.setNull(index, SQL_TYPES[0]);
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} else {
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@SuppressWarnings("unchecked")
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T castObject = (T) value;
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Array array = connection.createArrayOf("integer", (Object[]) castObject);
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statement.setArray(index, array);
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}
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}
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@Override
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public boolean isMutable() {
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return true;
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}
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@Override
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public Object replace(Object original, Object target, Object owner) throws HibernateException {
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return original;
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}
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@Override
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public Class<T> returnedClass() {
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return typeParameterClass;
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}
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@Override
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public int[] sqlTypes() {
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return new int[] { Types.ARRAY };
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}
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}
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