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[HHH-17294] DeepCopy non-Embedded JSON or XML JdbcTypCode attribute u…
…sing FormatMapper
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...-core/src/main/java/org/hibernate/type/descriptor/java/spi/FormatMapperBasedJavaType.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,122 @@ | ||
| /* | ||
| * Hibernate, Relational Persistence for Idiomatic Java | ||
| * | ||
| * License: GNU Lesser General Public License (LGPL), version 2.1 or later | ||
| * See the lgpl.txt file in the root directory or http://www.gnu.org/licenses/lgpl-2.1.html | ||
| */ | ||
| package org.hibernate.type.descriptor.java.spi; | ||
|
|
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| import java.io.Serializable; | ||
| import java.lang.reflect.Type; | ||
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| import org.hibernate.Incubating; | ||
| import org.hibernate.SharedSessionContract; | ||
| import org.hibernate.type.descriptor.WrapperOptions; | ||
| import org.hibernate.type.descriptor.java.AbstractJavaType; | ||
| import org.hibernate.type.descriptor.java.MutabilityPlan; | ||
| import org.hibernate.type.descriptor.jdbc.JdbcType; | ||
| import org.hibernate.type.descriptor.jdbc.JdbcTypeIndicators; | ||
| import org.hibernate.type.format.FormatMapper; | ||
| import org.hibernate.type.spi.TypeConfiguration; | ||
|
|
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| /** | ||
| * Java type for {@link FormatMapper} based types i.e. {@link org.hibernate.type.SqlTypes#JSON} | ||
| * or {@link org.hibernate.type.SqlTypes#SQLXML} mapped types. | ||
| * | ||
| * @author Christian Beikov | ||
| */ | ||
| @Incubating | ||
| public abstract class FormatMapperBasedJavaType<T> extends AbstractJavaType<T> implements MutabilityPlan<T> { | ||
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| private final TypeConfiguration typeConfiguration; | ||
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| public FormatMapperBasedJavaType( | ||
| Type type, | ||
| MutabilityPlan<T> mutabilityPlan, | ||
| TypeConfiguration typeConfiguration) { | ||
| super( type, mutabilityPlan ); | ||
| this.typeConfiguration = typeConfiguration; | ||
| } | ||
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| protected abstract FormatMapper getFormatMapper(TypeConfiguration typeConfiguration); | ||
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| @Override | ||
| public JdbcType getRecommendedJdbcType(JdbcTypeIndicators context) { | ||
| throw new JdbcTypeRecommendationException( | ||
| "Could not determine recommended JdbcType for Java type '" + getJavaType().getTypeName() + "'" | ||
| ); | ||
| } | ||
|
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| @Override | ||
| public String toString(T value) { | ||
| return getFormatMapper( typeConfiguration ).toString( | ||
| value, | ||
| this, | ||
| typeConfiguration.getSessionFactory().getWrapperOptions() | ||
| ); | ||
| } | ||
|
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| @Override | ||
| public T fromString(CharSequence string) { | ||
| return getFormatMapper( typeConfiguration ).fromString( | ||
| string, | ||
| this, | ||
| typeConfiguration.getSessionFactory().getWrapperOptions() | ||
| ); | ||
| } | ||
|
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| @Override | ||
| public <X> X unwrap(T value, Class<X> type, WrapperOptions options) { | ||
| if ( type.isAssignableFrom( getJavaTypeClass() ) ) { | ||
| //noinspection unchecked | ||
| return (X) value; | ||
| } | ||
| else if ( type == String.class ) { | ||
| //noinspection unchecked | ||
| return (X) getFormatMapper( typeConfiguration ).toString( value, this, options ); | ||
| } | ||
| throw new UnsupportedOperationException( | ||
| "Unwrap strategy not known for this Java type : " + getJavaType().getTypeName() | ||
| ); | ||
| } | ||
|
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| @Override | ||
| public <X> T wrap(X value, WrapperOptions options) { | ||
| if ( getJavaTypeClass().isInstance( value ) ) { | ||
| //noinspection unchecked | ||
| return (T) value; | ||
| } | ||
| else if ( value instanceof String ) { | ||
| return getFormatMapper( typeConfiguration ).fromString( (String) value, this, options ); | ||
| } | ||
| throw new UnsupportedOperationException( | ||
| "Wrap strategy not known for this Java type : " + getJavaType().getTypeName() | ||
| ); | ||
| } | ||
|
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| @Override | ||
| public MutabilityPlan<T> getMutabilityPlan() { | ||
| final MutabilityPlan<T> mutabilityPlan = super.getMutabilityPlan(); | ||
| return mutabilityPlan == null ? this : mutabilityPlan; | ||
| } | ||
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| @Override | ||
| public boolean isMutable() { | ||
| return true; | ||
| } | ||
|
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| @Override | ||
| public T deepCopy(T value) { | ||
| return fromString( toString( value ) ); | ||
| } | ||
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| @Override | ||
| public Serializable disassemble(T value, SharedSessionContract session) { | ||
| return toString( value ); | ||
| } | ||
|
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| @Override | ||
| public T assemble(Serializable cached, SharedSessionContract session) { | ||
| return fromString( (CharSequence) cached ); | ||
| } | ||
| } |
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