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Add support for binding Blob, Clob, java.sql.Array to PreparedStatement in JdbcMapper

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This commit is contained in:
Travis Burtrum 2017-05-29 18:26:11 -04:00
parent 12fc0edbd4
commit 2162e35456
3 changed files with 103 additions and 51 deletions
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29
common/src/main/java/com/moparisthebest/jdbc/codegen/JdbcMapper.java
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@ -65,6 +65,35 @@ public interface JdbcMapper extends Closeable {
int arrayMaxLength() default -1;
}
// these are to annotate parameters for special bind to PreparedStatement behavior
/**
* Use PreparedStatement.setBlob
*
* Only required for String
*
* Also valid for byte[], InputStream, Blob, File. But for those .setBlob is called even without this annotation
*/
@Retention(RetentionPolicy.SOURCE)
@Target({ElementType.PARAMETER})
public @interface Blob {
/**
* The charsetName sent into String.getBytes()
*/
String charsetName() default "UTF-8";
}
/**
* Use PreparedStatement.setClob
*
* Only valid for String
*
* Also valid for Clob, Reader. But for those .setClob is called even without this annotation
*/
@Retention(RetentionPolicy.SOURCE)
@Target({ElementType.PARAMETER})
public @interface Clob {}
public enum OptionalBool {
DEFAULT,
TRUE,

76
jdbcmapper/src/main/java/com/moparisthebest/jdbc/codegen/JdbcMapperProcessor.java
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@ -31,8 +31,7 @@ public class JdbcMapperProcessor extends AbstractProcessor {
private Types types;
private TypeMirror sqlExceptionType, stringType, numberType, utilDateType, readerType, clobType,
byteArrayType, inputStreamType, fileType, blobType
//, clobStringType, blobStringType, arrayListObjectType
byteArrayType, inputStreamType, fileType, blobType, sqlArrayType
;
public JdbcMapperProcessor() {
@ -58,11 +57,7 @@ public class JdbcMapperProcessor extends AbstractProcessor {
//byteArrayType = this.types.getArrayType(elements.getTypeElement(byte.class.getCanonicalName()).asType());
//byteArrayType = elements.getTypeElement(byte.class.getCanonicalName()).asType();
byteArrayType = types.getArrayType(types.getPrimitiveType(TypeKind.BYTE));
/*
clobStringType = elements.getTypeElement(ClobString.class.getCanonicalName()).asType();
blobStringType = elements.getTypeElement(BlobString.class.getCanonicalName()).asType();
arrayListObjectType = elements.getTypeElement(ArrayInList.ArrayListObject.class.getCanonicalName()).asType();
*/
sqlArrayType = elements.getTypeElement(java.sql.Array.class.getCanonicalName()).asType();
}
@Override
@ -263,7 +258,7 @@ public class JdbcMapperProcessor extends AbstractProcessor {
// now bind parameters
int count = 0;
for (final VariableElement param : bindParams)
setObject(w, ++count, param.getSimpleName().toString(), param.asType());
setObject(w, ++count, param);
if (!parsedSQl.isSelect()) {
if (returnType.equals("void")) {
@ -352,11 +347,49 @@ public class JdbcMapperProcessor extends AbstractProcessor {
return true;
}
private void setObject(final Writer w, final int index, String variableName, final TypeMirror o) throws SQLException, IOException {
private void setObject(final Writer w, final int index, final VariableElement param) throws SQLException, IOException {
String variableName = param.getSimpleName().toString();
final TypeMirror o = param.asType();
w.write("\t\t\t");
// we are going to put most common ones up top so it should execute faster normally
String method = null;
// special behavior
final JdbcMapper.Blob blob = param.getAnnotation(JdbcMapper.Blob.class);
if(blob != null) {
if (types.isAssignable(o, stringType)) {
w.write("try {\n\t\t\t\tps.setBlob(");
w.write(Integer.toString(index));
w.write(", ");
w.write(variableName);
w.write(" == null ? null : new java.io.ByteArrayInputStream(");
w.write(variableName);
w.write(".getBytes(\"");
w.write(blob.charsetName());
w.write("\")));\n\t\t\t} catch (java.io.UnsupportedEncodingException e) {\n" +
"\t\t\t\tthrow new SQLException(\"String to Blob UnsupportedEncodingException\", e);\n" +
"\t\t\t}\n");
return;
} else if (!(types.isAssignable(o, inputStreamType) || types.isAssignable(o, blobType) || types.isAssignable(o, fileType) || types.isAssignable(o, byteArrayType))) {
processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "@JdbcMapper.Blob only valid for String, byte[], Blob, InputStream, and File", param);
return;
}
} else {
final JdbcMapper.Clob clob = param.getAnnotation(JdbcMapper.Clob.class);
if(clob != null) {
if (types.isAssignable(o, stringType)) {
method = "Clob";
variableName = variableName + " == null ? null : new StringReader("+variableName+")";
} else if (!(types.isAssignable(o, readerType) || types.isAssignable(o, clobType))) {
processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "@JdbcMapper.Clob only valid for String, Clob, Reader", param);
return;
}
}
}
// end special behavior
// we are going to put most common ones up top so it should execute faster normally
// todo: avoid string concat here
if(method == null)
if (o.getKind().isPrimitive() || types.isAssignable(o, stringType) || types.isAssignable(o, numberType)) {
method = "Object";
// java.util.Date support, put it in a Timestamp
@ -368,14 +401,6 @@ public class JdbcMapperProcessor extends AbstractProcessor {
// CLOB support
} else if (types.isAssignable(o, readerType) || types.isAssignable(o, clobType)) {
method = "Clob";
/*
} else if (o instanceof ClobString) {
ps.setObject(index, ((ClobString) o).s == null ? null : ((ClobString) o).s);
*/
// BLOB support
} else if (types.isAssignable(o, byteArrayType)) {
method = "Blob";
variableName = "new java.io.ByteArrayInputStream(" + variableName + ")";
} else if (types.isAssignable(o, inputStreamType) || types.isAssignable(o, blobType)) {
method = "Blob";
} else if (types.isAssignable(o, fileType)) {
@ -386,16 +411,11 @@ public class JdbcMapperProcessor extends AbstractProcessor {
"\t\t\t\tthrow new SQLException(\"File to Blob FileNotFoundException\", e);\n" +
"\t\t\t}");
return;
/*
} else if (o instanceof BlobString) {
try {
ps.setBlob(index, ((BlobString) o).s == null ? null : new ByteArrayInputStream(((BlobString) o).s.getBytes("UTF-8")));
} catch (UnsupportedEncodingException e) {
throw new SQLException("String to Blob UnsupportedEncodingException", e);
}
} else if (o instanceof ArrayInList.ArrayListObject) {
ps.setArray(index, ((ArrayInList.ArrayListObject) o).getArray());
*/
} else if (types.isAssignable(o, byteArrayType)) {
method = "Blob";
variableName = "new java.io.ByteArrayInputStream(" + variableName + ")";
} else if (types.isAssignable(o, sqlArrayType)) {
method = "Array";
} else {
// probably won't get here ever, but just in case...
method = "Object";

3
jdbcmapper/src/test/java/com/moparisthebest/jdbc/codegen/PersonDAO.java
View File

@ -28,6 +28,9 @@ public interface PersonDAO {
@JdbcMapper.SQL("UPDATE person SET first_name = {firstName} WHERE person_no = {personNo}")
void setFirstNameBlob(byte[] firstName, long personNo) throws SQLException;
@JdbcMapper.SQL("UPDATE person SET first_name = {firstName} WHERE person_no = {personNo}")
void setFirstNameBlob(@JdbcMapper.Blob String firstName, long personNo) throws SQLException;
@JdbcMapper.SQL("SELECT first_name FROM person WHERE person_no = {personNo}")
String getFirstName(long personNo) throws SQLException;