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Use SQL arrays (of double precision DB type)
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93 changes: 93 additions & 0 deletions
93
...map-star/src/main/java/uk/ac/ucl/rits/inform/informdb/visit_recordings/WaveformArray.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
| package uk.ac.ucl.rits.inform.informdb.visit_recordings; | ||
|
|
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| import org.hibernate.HibernateError; | ||
| import org.hibernate.HibernateException; | ||
| import org.hibernate.engine.spi.SharedSessionContractImplementor; | ||
| import org.hibernate.usertype.UserType; | ||
|
|
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| import java.io.Serializable; | ||
| import java.sql.Array; | ||
| import java.sql.PreparedStatement; | ||
| import java.sql.ResultSet; | ||
| import java.sql.SQLException; | ||
| import java.sql.Types; | ||
| import java.util.Arrays; | ||
| import java.util.Objects; | ||
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| public class WaveformArray implements UserType { | ||
| @Override | ||
| public int[] sqlTypes() { | ||
| return new int[]{Types.ARRAY}; | ||
| } | ||
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| @Override | ||
| public Class returnedClass() { | ||
| return Double[].class; | ||
| } | ||
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| @Override | ||
| public boolean equals(Object o, Object o1) throws HibernateException { | ||
| return Objects.equals(o, o1); | ||
| } | ||
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| @Override | ||
| public int hashCode(Object o) throws HibernateException { | ||
| return Objects.hashCode(o); | ||
| } | ||
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| @Override | ||
| public Object nullSafeGet(ResultSet resultSet, | ||
| String[] strings, | ||
| SharedSessionContractImplementor sharedSessionContractImplementor, | ||
| Object o) throws HibernateException, SQLException { | ||
| String columnName = strings[0]; | ||
| Array sqlArray = (Array) resultSet.getObject(columnName); | ||
| Object[] doubleArray = (Object[]) sqlArray.getArray(); | ||
| return Arrays.copyOf(doubleArray, doubleArray.length, Double[].class); | ||
| } | ||
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||
| @Override | ||
| public void nullSafeSet( | ||
| PreparedStatement preparedStatement, | ||
| Object objToSet, | ||
| int psIdx, | ||
| SharedSessionContractImplementor sharedSessionContractImplementor | ||
| ) throws HibernateException, SQLException { | ||
| if (objToSet == null) { | ||
| preparedStatement.setNull(psIdx, Types.ARRAY); | ||
| } else { | ||
| Double[] asDoubleArray = (Double[]) objToSet; | ||
| Array sqlArray = preparedStatement.getConnection().createArrayOf("NUMERIC", asDoubleArray); | ||
| preparedStatement.setArray(psIdx, sqlArray); | ||
| } | ||
| } | ||
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| @Override | ||
| public Object deepCopy(Object o) throws HibernateException { | ||
| if (o == null) { | ||
| return null; | ||
| } | ||
| Double[] doubleArray = (Double[]) o; | ||
| return doubleArray.clone(); | ||
| } | ||
|
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||
| @Override | ||
| public boolean isMutable() { | ||
| return false; | ||
| } | ||
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| @Override | ||
| public Serializable disassemble(Object o) throws HibernateException { | ||
| throw new HibernateError("JES JES JES"); | ||
| } | ||
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| @Override | ||
| public Object assemble(Serializable serializable, Object o) throws HibernateException { | ||
| throw new HibernateError("JES JES JES"); | ||
| } | ||
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| @Override | ||
| public Object replace(Object o, Object o1, Object o2) throws HibernateException { | ||
| throw new HibernateError("JES JES JES"); | ||
| } | ||
| } |